diff --git a/app/api/materials/[id]/route.ts b/app/api/materials/[id]/route.ts
index cb4c217..fb6c98e 100644
--- a/app/api/materials/[id]/route.ts
+++ b/app/api/materials/[id]/route.ts
@@ -169,7 +169,7 @@ export async function GET(
           reportKind: true,
           certificateTestedOn: true,
           certificateNumber: true,
-          certificateUsageInstructions: true,
+          certificateExpiresOn: true,
           reportUsageRules: true,
           liveDate: true,
           liveHost: true,
@@ -251,7 +251,7 @@ export async function GET(
               reportKind: true,
               certificateTestedOn: true,
               certificateNumber: true,
-              certificateUsageInstructions: true,
+              certificateExpiresOn: true,
               reportUsageRules: true,
           liveDate: true,
           liveHost: true,
@@ -387,7 +387,7 @@ export async function GET(
           reportKind: materialWithUser.reportKind || null,
           certificateTestedOn: materialWithUser.certificateTestedOn || null,
           certificateNumber: materialWithUser.certificateNumber || null,
-          certificateUsageInstructions: materialWithUser.certificateUsageInstructions || null,
+          certificateExpiresOn: materialWithUser.certificateExpiresOn || null,
           reportUsageRules: materialWithUser.reportUsageRules || null,
         categoryName: materialWithUser.categoryName,
         sceneName: materialWithUser.sceneName,
@@ -481,7 +481,7 @@ export async function GET(
       reportKind: materialWithUser.reportKind || null,
       certificateTestedOn: materialWithUser.certificateTestedOn || null,
       certificateNumber: materialWithUser.certificateNumber || null,
-      certificateUsageInstructions: materialWithUser.certificateUsageInstructions || null,
+      certificateExpiresOn: materialWithUser.certificateExpiresOn || null,
       reportUsageRules: materialWithUser.reportUsageRules || null,
       categoryName: materialWithUser.categoryName,
       sceneName: materialWithUser.sceneName,
@@ -617,7 +617,7 @@ export async function PUT(
         ...(formData.has('reportKind') ? { reportKind: formData.get('reportKind') as string | null } : {}),
         ...(formData.has('certificateTestedOn') ? { certificateTestedOn: formData.get('certificateTestedOn') as string | null } : {}),
         ...(formData.has('certificateNumber') ? { certificateNumber: formData.get('certificateNumber') as string | null } : {}),
-        ...(formData.has('certificateUsageInstructions') ? { certificateUsageInstructions: formData.get('certificateUsageInstructions') as string | null } : {}),
+        ...(formData.has('certificateExpiresOn') ? { certificateExpiresOn: formData.get('certificateExpiresOn') as string | null } : {}),
         ...(formData.has('reportUsageRules') ? { reportUsageRules: formData.get('reportUsageRules') as string | null } : {}),
         categoryName: formData.get('categoryName') as string | null,
         sceneName: formData.get('sceneName') as string | null,
diff --git a/app/api/materials/share/route.ts b/app/api/materials/share/route.ts
index a570f58..714725a 100644
--- a/app/api/materials/share/route.ts
+++ b/app/api/materials/share/route.ts
@@ -128,7 +128,7 @@ export async function GET(request: NextRequest) {
         reportKind: true,
         certificateTestedOn: true,
         certificateNumber: true,
-        certificateUsageInstructions: true,
+        certificateExpiresOn: true,
         reportUsageRules: true,
         liveDate: true,
         liveHost: true,
@@ -364,7 +364,7 @@ export async function GET(request: NextRequest) {
       reportKind: (material as any).reportKind || null,
       certificateTestedOn: (material as any).certificateTestedOn || null,
       certificateNumber: (material as any).certificateNumber || null,
-      certificateUsageInstructions: (material as any).certificateUsageInstructions || null,
+      certificateExpiresOn: (material as any).certificateExpiresOn || null,
       reportUsageRules: (material as any).reportUsageRules || null,
       isAiGenerated: Boolean((material as any).isAiGenerated),
       taskDetailSourceType: (material as any).taskDetailSourceType || null,
diff --git a/app/api/materials/update/route.ts b/app/api/materials/update/route.ts
index 87d80af..59aab30 100644
--- a/app/api/materials/update/route.ts
+++ b/app/api/materials/update/route.ts
@@ -48,7 +48,7 @@ export async function PUT(request: NextRequest) {
         ...(formData.has('reportKind') ? { reportKind: formData.get('reportKind') as string | null } : {}),
         ...(formData.has('certificateTestedOn') ? { certificateTestedOn: formData.get('certificateTestedOn') as string | null } : {}),
         ...(formData.has('certificateNumber') ? { certificateNumber: formData.get('certificateNumber') as string | null } : {}),
-        ...(formData.has('certificateUsageInstructions') ? { certificateUsageInstructions: formData.get('certificateUsageInstructions') as string | null } : {}),
+        ...(formData.has('certificateExpiresOn') ? { certificateExpiresOn: formData.get('certificateExpiresOn') as string | null } : {}),
         ...(formData.has('reportUsageRules') ? { reportUsageRules: formData.get('reportUsageRules') as string | null } : {}),
         categoryName: formData.get('categoryName') as string | null,
         sceneName: formData.get('sceneName') as string | null,
diff --git a/app/api/materials/upload/certificate-report/init/route.test.ts b/app/api/materials/upload/certificate-report/init/route.test.ts
index e2f47af..59f2d64 100644
--- a/app/api/materials/upload/certificate-report/init/route.test.ts
+++ b/app/api/materials/upload/certificate-report/init/route.test.ts
@@ -22,7 +22,7 @@ const input = {
   platformName: '品牌',
   certificateTestedOn: '2027-09-23',
   certificateNumber: 'CMA-2026-001',
-  certificateUsageInstructions: '使用前核对送检主体',
+  certificateExpiresOn: '2028-09-23',
   reportUsageRules: '完整说明\n第二行',
 }
 
@@ -50,7 +50,7 @@ describe('检测报告初始化', () => {
         reportKind: '原材料',
         certificateTestedOn: new Date('2027-09-23T00:00:00.000Z'),
         certificateNumber: 'CMA-2026-001',
-        certificateUsageInstructions: '使用前核对送检主体',
+        certificateExpiresOn: new Date('2028-09-23T00:00:00.000Z'),
         reportUsageRules: '完整说明\n第二行',
         platformName: '品牌',
       }),
@@ -62,4 +62,10 @@ describe('检测报告初始化', () => {
     expect(response.status).toBe(400)
     expect(prisma.material.create).not.toHaveBeenCalled()
   })
+
+  test('到期时间早于检测日期时不写入素材', async () => {
+    const response = await POST(request({ ...input, certificateExpiresOn: '2027-09-22' }))
+    expect(response.status).toBe(400)
+    expect(prisma.material.create).not.toHaveBeenCalled()
+  })
 })
diff --git a/app/api/materials/upload/certificate-report/init/route.ts b/app/api/materials/upload/certificate-report/init/route.ts
index f5b5c36..c5baa8a 100644
--- a/app/api/materials/upload/certificate-report/init/route.ts
+++ b/app/api/materials/upload/certificate-report/init/route.ts
@@ -23,7 +23,7 @@ export async function POST(request: NextRequest) {
       reportTitle,
       certificateTestedOn: body.certificateTestedOn,
       certificateNumber: body.certificateNumber,
-      certificateUsageInstructions: body.certificateUsageInstructions,
+      certificateExpiresOn: body.certificateExpiresOn,
       reportUsageRules: body.reportUsageRules,
       platformName,
     })
diff --git a/app/edit/[id]/page.tsx b/app/edit/[id]/page.tsx
index 2b60632..b8495a1 100644
--- a/app/edit/[id]/page.tsx
+++ b/app/edit/[id]/page.tsx
@@ -7,7 +7,7 @@ import Header from '@/components/Header'
 import SearchableUserSelect from '@/components/SearchableUserSelect'
 import { useConfirmActionDialog } from '@/components/ConfirmActionDialog'
 import TaskReferenceFields from '@/components/upload/TaskReferenceFields'
-import CertificateTestDatePicker from '@/components/upload/CertificateTestDatePicker'
+import CertificateDatePicker from '@/components/upload/CertificateDatePicker'
 import {
   canManuallyReplacePreview,
   getSelectableMaterialTypeOptions,
@@ -38,7 +38,7 @@ interface Material {
   reportKind?: string | null
   certificateTestedOn?: string | Date | null
   certificateNumber?: string | null
-  certificateUsageInstructions?: string | null
+  certificateExpiresOn?: string | null
   reportUsageRules?: string | null
   liveDate?: Date | string | null
   liveHost?: string | null
@@ -111,7 +111,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
   const [reportKind, setReportKind] = useState('')
   const [certificateTestedOn, setCertificateTestedOn] = useState('')
   const [certificateNumber, setCertificateNumber] = useState('')
-  const [certificateUsageInstructions, setCertificateUsageInstructions] = useState('')
+  const [certificateExpiresOn, setCertificateExpiresOn] = useState('')
   const [reportUsageRules, setReportUsageRules] = useState('')
   const [liveDate, setLiveDate] = useState('')
   const [liveHost, setLiveHost] = useState('')
@@ -163,7 +163,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
     reportKind,
     certificateTestedOn,
     certificateNumber,
-    certificateUsageInstructions,
+    certificateExpiresOn,
     reportUsageRules,
     categoryName,
     sceneName,
@@ -191,7 +191,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
     reportKind,
     certificateTestedOn,
     certificateNumber,
-    certificateUsageInstructions,
+    certificateExpiresOn,
     reportUsageRules,
     sceneName,
     taskDetailRequesterUserId,
@@ -306,7 +306,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
       setReportKind(data.reportKind || '')
       setCertificateTestedOn(data.certificateTestedOn ? String(data.certificateTestedOn).slice(0, 10) : '')
       setCertificateNumber(data.certificateNumber || '')
-      setCertificateUsageInstructions(data.certificateUsageInstructions || '')
+      setCertificateExpiresOn(data.certificateExpiresOn ? String(data.certificateExpiresOn).slice(0, 10) : '')
       setReportUsageRules(data.reportUsageRules || (isCertificateReportMaterialType(data.materialType) ? DEFAULT_CERTIFICATE_REPORT_USAGE_RULES : ''))
       setLiveDate(data.liveDate ? String(data.liveDate).slice(0, 10) : '')
       setLiveHost(data.liveHost || '')
@@ -349,7 +349,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
         reportKind: data.reportKind || '',
         certificateTestedOn: data.certificateTestedOn ? String(data.certificateTestedOn).slice(0, 10) : '',
         certificateNumber: data.certificateNumber || '',
-        certificateUsageInstructions: data.certificateUsageInstructions || '',
+        certificateExpiresOn: data.certificateExpiresOn ? String(data.certificateExpiresOn).slice(0, 10) : '',
         reportUsageRules: data.reportUsageRules || (isCertificateReportMaterialType(data.materialType) ? DEFAULT_CERTIFICATE_REPORT_USAGE_RULES : ''),
         categoryName: data.categoryName || '',
         sceneName: data.sceneName || '',
@@ -526,7 +526,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
         reportTitle,
         certificateTestedOn,
         certificateNumber,
-        certificateUsageInstructions,
+        certificateExpiresOn,
         reportUsageRules,
         platformName,
       }, material?.materialType === materialType ? material?.platformName || '' : '')
@@ -592,7 +592,7 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
         formData.append('reportKind', reportKind)
         formData.append('certificateTestedOn', certificateTestedOn)
         formData.append('certificateNumber', certificateNumber)
-        formData.append('certificateUsageInstructions', certificateUsageInstructions)
+        formData.append('certificateExpiresOn', certificateExpiresOn)
         formData.append('reportUsageRules', reportUsageRules)
       }
       if (materialType === '直播切片') {
@@ -1065,17 +1065,17 @@ export default function EditMaterialPage({ params }: { params: { id: string } })
                 <div className="grid gap-4 sm:grid-cols-2">
                   <div>
                     <label htmlFor={`edit-material-${params.id}-certificate-tested-on`} className="mb-2 block text-sm font-medium text-gray-700">证书检测日期 *</label>
-                    <CertificateTestDatePicker id={`edit-material-${params.id}-certificate-tested-on`} value={certificateTestedOn} onChange={setCertificateTestedOn} disabled={submitting} />
+                    <CertificateDatePicker id={`edit-material-${params.id}-certificate-tested-on`} label="证书检测日期" value={certificateTestedOn} onChange={setCertificateTestedOn} disabled={submitting} />
                     <p className="mt-1 text-xs text-gray-500">请按报告标注的检测日期选择</p>
                   </div>
                   <div>
-                    <label htmlFor={`edit-material-${params.id}-certificate-number`} className="mb-2 block text-sm font-medium text-gray-700">证书编号 *</label>
-                    <input id={`edit-material-${params.id}-certificate-number`} type="text" value={certificateNumber} onChange={(event) => setCertificateNumber(event.target.value)} maxLength={120} className="input-apple" required />
+                    <label htmlFor={`edit-material-${params.id}-certificate-expires-on`} className="mb-2 block text-sm font-medium text-gray-700">证书到期时间 *</label>
+                    <CertificateDatePicker id={`edit-material-${params.id}-certificate-expires-on`} label="证书到期时间" value={certificateExpiresOn} onChange={setCertificateExpiresOn} disabled={submitting} />
                   </div>
                 </div>
                 <div>
-                  <label htmlFor={`edit-material-${params.id}-certificate-instructions`} className="mb-2 block text-sm font-medium text-gray-700">证书使用说明 *</label>
-                  <textarea id={`edit-material-${params.id}-certificate-instructions`} value={certificateUsageInstructions} onChange={(event) => setCertificateUsageInstructions(event.target.value)} rows={3} maxLength={5000} className="input-apple resize-y" required />
+                  <label htmlFor={`edit-material-${params.id}-certificate-number`} className="mb-2 block text-sm font-medium text-gray-700">证书编号 *</label>
+                  <input id={`edit-material-${params.id}-certificate-number`} type="text" value={certificateNumber} onChange={(event) => setCertificateNumber(event.target.value)} maxLength={120} className="input-apple" required />
                 </div>
                 <div>
                   <label htmlFor={`edit-material-${params.id}-report-rules`} className="mb-2 block text-sm font-medium text-gray-700">检测报告使用规则说明 *</label>
diff --git a/app/share/[id]/page.test.tsx b/app/share/[id]/page.test.tsx
index 0bc2152..980f5c5 100644
--- a/app/share/[id]/page.test.tsx
+++ b/app/share/[id]/page.test.tsx
@@ -270,8 +270,9 @@ describe('certificate report share page', () => {
     render(<SharePage />)
     expect(await screen.findByText('CMA-2026-001')).toBeInTheDocument()
     expect(screen.getByText('2027-09-23')).toBeInTheDocument()
-    expect(screen.queryByText('2028-09-23')).not.toBeInTheDocument()
-    expect(screen.getByText('使用前核对主体')).toBeInTheDocument()
+    expect(screen.getByText('2028-09-23')).toBeInTheDocument()
+    expect(screen.queryByRole('heading', { name: '证书使用说明' })).not.toBeInTheDocument()
+    expect(screen.queryByText('使用前核对主体')).not.toBeInTheDocument()
     expect(screen.getByRole('heading', { name: '检测报告使用规则说明' }).nextElementSibling?.textContent)
       .toBe('第一段\n第二段')
   })
diff --git a/app/share/[id]/page.tsx b/app/share/[id]/page.tsx
index 3b1ffdf..7551882 100644
--- a/app/share/[id]/page.tsx
+++ b/app/share/[id]/page.tsx
@@ -41,7 +41,7 @@ interface Material {
   reportKind?: string | null
   certificateTestedOn?: string | null
   certificateNumber?: string | null
-  certificateUsageInstructions?: string | null
+  certificateExpiresOn?: string | null
   reportUsageRules?: string | null
   liveDate?: string | Date | null
   liveHost?: string | null
@@ -2085,6 +2085,10 @@ export default function SharePage() {
                         <p className="mb-1 text-[12px] text-[#86898e]">证书检测日期</p>
                         <p className="font-en text-[15px] font-medium tabular-nums text-[#1a1c1d]">{material.certificateTestedOn ? String(material.certificateTestedOn).slice(0, 10) : '待补充'}</p>
                       </div>
+                      <div>
+                        <p className="mb-1 text-[12px] text-[#86898e]">证书到期时间</p>
+                        <p className="font-en text-[15px] font-medium tabular-nums text-[#1a1c1d]">{material.certificateExpiresOn ? String(material.certificateExpiresOn).slice(0, 10) : '待补充'}</p>
+                      </div>
                       <div>
                         <p className="mb-1 text-[12px] text-[#86898e]">证书编号</p>
                         <p className="break-all text-[15px] font-medium text-[#1a1c1d]">{material.certificateNumber || '待补充'}</p>
@@ -2244,15 +2248,9 @@ export default function SharePage() {
         </div>
         {isCertificateReportMaterialType(material.materialType) && (
           <section className="mt-6 rounded-[12px] border border-[#e7e8ea] bg-white px-5 py-6 sm:px-7" aria-label="检测报告使用说明">
-            <div className="max-w-[75ch] space-y-6">
-              <div>
-                <h2 className="text-[17px] font-semibold text-[#1a1c1d]">证书使用说明</h2>
-                <p className="mt-3 whitespace-pre-wrap break-words text-[14px] leading-7 text-[#3d4246]">{material.certificateUsageInstructions || '待补充'}</p>
-              </div>
-              <div className="border-t border-[#e7e8ea] pt-6">
-                <h2 className="text-[17px] font-semibold text-[#1a1c1d]">检测报告使用规则说明</h2>
-                <p className="mt-3 whitespace-pre-wrap break-words text-[14px] leading-7 text-[#3d4246]">{material.reportUsageRules || '待补充'}</p>
-              </div>
+            <div className="max-w-[75ch]">
+              <h2 className="text-[17px] font-semibold text-[#1a1c1d]">检测报告使用规则说明</h2>
+              <p className="mt-3 whitespace-pre-wrap break-words text-[14px] leading-7 text-[#3d4246]">{material.reportUsageRules || '待补充'}</p>
             </div>
           </section>
         )}
diff --git a/components/upload/CertificateTestDatePicker.test.tsx b/components/upload/CertificateDatePicker.test.tsx
similarity index 61%
rename from components/upload/CertificateTestDatePicker.test.tsx
rename to components/upload/CertificateDatePicker.test.tsx
index 43381f6..a0f8f33 100644
--- a/components/upload/CertificateTestDatePicker.test.tsx
+++ b/components/upload/CertificateDatePicker.test.tsx
@@ -1,9 +1,27 @@
 import { fireEvent, render, screen } from '@testing-library/react'
-import CertificateTestDatePicker from '@/components/upload/CertificateTestDatePicker'
+import CertificateDatePicker from '@/components/upload/CertificateDatePicker'
+
+describe('CertificateDatePicker', () => {
+  test('检测日期和到期时间分别选择，日历使用独立的名称和状态', () => {
+    const onTested = jest.fn()
+    const onExpires = jest.fn()
+    render(<>
+      <CertificateDatePicker id="tested-on" label="证书检测日期" value="2026-09-23" onChange={onTested} />
+      <CertificateDatePicker id="expires-on" label="证书到期时间" value="2027-09-23" onChange={onExpires} />
+    </>)
+    const expires = screen.getByRole('button', { name: /证书到期时间/ })
+    fireEvent.click(expires)
+    expect(screen.getByRole('dialog', { name: '选择证书到期时间' })).toBeInTheDocument()
+    fireEvent.click(expires)
+    expect(screen.queryByRole('dialog')).not.toBeInTheDocument()
+    fireEvent.click(expires)
+    fireEvent.click(screen.getByRole('button', { name: '2027年9月24日' }))
+    expect(onExpires).toHaveBeenCalledWith('2027-09-24')
+    expect(onTested).not.toHaveBeenCalled()
+  })
 
-describe('CertificateTestDatePicker', () => {
   test('日历图标可反复展开和收起，Escape 也会关闭', () => {
-    render(<CertificateTestDatePicker id="tested-on" value="2026-09-23" onChange={jest.fn()} />)
+    render(<CertificateDatePicker id="tested-on" label="证书检测日期" value="2026-09-23" onChange={jest.fn()} />)
 
     const trigger = screen.getByRole('button', { name: /证书检测日期/ })
     const icon = trigger.querySelector('svg')
@@ -25,7 +43,7 @@ describe('CertificateTestDatePicker', () => {
 
   test('按日历选择日期时返回统一格式，并关闭日历', () => {
     const onChange = jest.fn()
-    render(<CertificateTestDatePicker id="tested-on" value="2026-09-23" onChange={onChange} />)
+    render(<CertificateDatePicker id="tested-on" label="证书检测日期" value="2026-09-23" onChange={onChange} />)
 
     fireEvent.click(screen.getByRole('button', { name: /证书检测日期/ }))
     expect(screen.getByText('2026年9月')).toBeInTheDocument()
@@ -39,7 +57,7 @@ describe('CertificateTestDatePicker', () => {
 
   test('点击日历外部会关闭，不改动已选择的日期', () => {
     const onChange = jest.fn()
-    render(<CertificateTestDatePicker id="tested-on" value="2026-09-23" onChange={onChange} />)
+    render(<CertificateDatePicker id="tested-on" label="证书检测日期" value="2026-09-23" onChange={onChange} />)
 
     fireEvent.click(screen.getByRole('button', { name: /证书检测日期/ }))
     fireEvent.pointerDown(document.body)
@@ -50,7 +68,7 @@ describe('CertificateTestDatePicker', () => {
 
   test('可以直接切换年份和月份选择较远的检测日期', () => {
     const onChange = jest.fn()
-    render(<CertificateTestDatePicker id="tested-on" value="2026-09-23" onChange={onChange} />)
+    render(<CertificateDatePicker id="tested-on" label="证书检测日期" value="2026-09-23" onChange={onChange} />)
 
     fireEvent.click(screen.getByRole('button', { name: /证书检测日期/ }))
     fireEvent.click(screen.getByRole('button', { name: '选择年份和月份' }))
diff --git a/components/upload/CertificateTestDatePicker.tsx b/components/upload/CertificateDatePicker.tsx
similarity index 96%
rename from components/upload/CertificateTestDatePicker.tsx
rename to components/upload/CertificateDatePicker.tsx
index 186e572..802cf06 100644
--- a/components/upload/CertificateTestDatePicker.tsx
+++ b/components/upload/CertificateDatePicker.tsx
@@ -12,14 +12,15 @@ function parseDate(value: string): Date | null {
   return isValid(date) && format(date, 'yyyy-MM-dd') === value ? date : null
 }
 
-interface CertificateTestDatePickerProps {
+interface CertificateDatePickerProps {
   id: string
+  label: string
   value: string
   onChange: (value: string) => void
   disabled?: boolean
 }
 
-export default function CertificateTestDatePicker({ id, value, onChange, disabled = false }: CertificateTestDatePickerProps) {
+export default function CertificateDatePicker({ id, label, value, onChange, disabled = false }: CertificateDatePickerProps) {
   const containerRef = useRef<HTMLDivElement>(null)
   const triggerRef = useRef<HTMLButtonElement>(null)
   const calendarRef = useRef<HTMLDivElement>(null)
@@ -91,7 +92,7 @@ export default function CertificateTestDatePicker({ id, value, onChange, disable
         id={id}
         type="button"
         disabled={disabled}
-        aria-label={`证书检测日期，${selectedDate ? format(selectedDate, 'yyyy年M月d日') : '未选择'}`}
+        aria-label={`${label}，${selectedDate ? format(selectedDate, 'yyyy年M月d日') : '未选择'}`}
         aria-haspopup="dialog"
         aria-expanded={isOpen}
         aria-controls={`${id}-calendar`}
@@ -102,7 +103,7 @@ export default function CertificateTestDatePicker({ id, value, onChange, disable
         className="input-apple flex min-h-[50px] items-center justify-between gap-3 text-left disabled:cursor-not-allowed disabled:opacity-60"
       >
         <span className={selectedDate ? 'text-[#1a1c1d]' : 'text-gray-500'}>
-          {selectedDate ? format(selectedDate, 'yyyy年M月d日') : '选择检测日期'}
+          {selectedDate ? format(selectedDate, 'yyyy年M月d日') : '选择日期'}
         </span>
         <CalendarDays className="h-[18px] w-[18px] shrink-0 text-[#5c6470]" aria-hidden="true" />
       </button>
@@ -112,7 +113,7 @@ export default function CertificateTestDatePicker({ id, value, onChange, disable
           ref={calendarRef}
           id={`${id}-calendar`}
           role="dialog"
-          aria-label="选择证书检测日期"
+          aria-label={`选择${label}`}
           className="absolute left-1/2 top-full z-40 mt-2 w-[320px] max-w-[calc(100vw-3rem)] -translate-x-1/2 rounded-[12px] border border-[#e7e8ea] bg-white p-3 text-[#1a1c1d] shadow-[0_12px_28px_rgba(26,28,29,0.10)]"
         >
           <div className="mb-3 flex items-center justify-between gap-2">
diff --git a/components/upload/CertificateReportUploader.test.tsx b/components/upload/CertificateReportUploader.test.tsx
new file mode 100644
index 0000000..6280d9a
--- /dev/null
+++ b/components/upload/CertificateReportUploader.test.tsx
@@ -0,0 +1,44 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import CertificateReportUploader from './CertificateReportUploader'
+import { chunkUpload } from '@/lib/chunk-upload'
+import { DEFAULT_CERTIFICATE_REPORT_USAGE_RULES } from '@/lib/certificate-report'
+
+jest.mock('@/lib/chunk-upload', () => ({ chunkUpload: jest.fn() }))
+
+test.each(['成品', '原材料'])('%s上传只提交一段说明，并分别提交检测日期和到期时间', async (kind) => {
+  const originalFetch = global.fetch
+  jest.useFakeTimers().setSystemTime(new Date('2026-09-27T12:00:00'))
+  const { container } = render(<CertificateReportUploader onSuccess={jest.fn()} onCancel={jest.fn()} productCategories={[{ id: '1', name: '板材' }]} />)
+  try {
+    expect(screen.getByLabelText('成品')).toBeChecked()
+    fireEvent.click(screen.getByLabelText(kind))
+    fireEvent.change(screen.getByLabelText(/报告名称 \/ 检测对象/), { target: { value: '板材检测报告' } })
+    fireEvent.change(screen.getByLabelText('品类 *'), { target: { value: '板材' } })
+    fireEvent.change(screen.getByLabelText('证书编号 *'), { target: { value: 'CMA-001' } })
+    fireEvent.click(screen.getByRole('button', { name: /证书检测日期/ }))
+    fireEvent.click(screen.getByRole('button', { name: '2026年9月23日' }))
+    fireEvent.click(screen.getByRole('button', { name: /证书到期时间/ }))
+    fireEvent.click(screen.getByRole('button', { name: '选择年份和月份' }))
+    fireEvent.click(screen.getByRole('button', { name: '下一年' }))
+    fireEvent.click(screen.getByRole('button', { name: '9月' }))
+    fireEvent.click(screen.getByRole('button', { name: '2027年9月23日' }))
+    expect(screen.queryByLabelText('证书使用说明 *')).not.toBeInTheDocument()
+    expect(screen.getAllByRole('textbox').filter((input) => input.tagName === 'TEXTAREA')).toHaveLength(1)
+    expect(screen.getByLabelText('检测报告使用规则说明 *')).toHaveValue(DEFAULT_CERTIFICATE_REPORT_USAGE_RULES)
+    const pdf = new File(['%PDF-1.4'], '报告.pdf', { type: 'application/pdf' })
+    fireEvent.change(container.querySelector('input[type="file"]')!, { target: { files: [pdf] } })
+    jest.useRealTimers()
+    global.fetch = jest.fn().mockResolvedValue({ ok: true, json: async () => ({ materialId: 'report-1' }) })
+    ;(chunkUpload as jest.Mock).mockResolvedValue({ uploadId: 'file-1' })
+    fireEvent.click(screen.getByRole('button', { name: '创建分享素材' }))
+    await waitFor(() => expect(global.fetch).toHaveBeenCalledTimes(2))
+    const [url, init] = (global.fetch as jest.Mock).mock.calls[0]
+    expect(url).toBe('/api/materials/upload/certificate-report/init')
+    const payload = JSON.parse(init.body)
+    expect(payload).toMatchObject({ reportKind: kind, certificateTestedOn: '2026-09-23', certificateExpiresOn: '2027-09-23', reportUsageRules: DEFAULT_CERTIFICATE_REPORT_USAGE_RULES })
+    expect(payload).not.toHaveProperty('certificateUsageInstructions')
+  } finally {
+    jest.useRealTimers()
+    global.fetch = originalFetch
+  }
+})
diff --git a/components/upload/CertificateReportUploader.tsx b/components/upload/CertificateReportUploader.tsx
index 12f6f61..2aff6cc 100644
--- a/components/upload/CertificateReportUploader.tsx
+++ b/components/upload/CertificateReportUploader.tsx
@@ -9,7 +9,7 @@ import {
   detectFileKindFromName,
   validateCertificateReportMetadata,
 } from '@/lib/certificate-report'
-import CertificateTestDatePicker from '@/components/upload/CertificateTestDatePicker'
+import CertificateDatePicker from '@/components/upload/CertificateDatePicker'
 import { FileUp } from 'lucide-react'
 import { dropZoneIdleClass, fieldControlClass, fieldHintClass, fieldLabelClass, inkButtonClass, outlineButtonClass, uploadAreaButtonClass } from './upload-field-styles'
 
@@ -41,7 +41,7 @@ export default function CertificateReportUploader({
   const [reportKind, setReportKind] = useState<string>(CERTIFICATE_REPORT_KIND.FINISHED)
   const [certificateTestedOn, setCertificateTestedOn] = useState('')
   const [certificateNumber, setCertificateNumber] = useState('')
-  const [certificateUsageInstructions, setCertificateUsageInstructions] = useState('')
+  const [certificateExpiresOn, setCertificateExpiresOn] = useState('')
   const [reportUsageRules, setReportUsageRules] = useState(DEFAULT_CERTIFICATE_REPORT_USAGE_RULES)
   const [productCategoryName, setProductCategoryName] = useState('')
   const [platformName, setPlatformName] = useState('')
@@ -126,7 +126,7 @@ export default function CertificateReportUploader({
       reportTitle,
       certificateTestedOn,
       certificateNumber,
-      certificateUsageInstructions,
+      certificateExpiresOn,
       reportUsageRules,
       platformName,
     })
@@ -160,7 +160,7 @@ export default function CertificateReportUploader({
           reportKind,
           certificateTestedOn,
           certificateNumber: certificateNumber.trim(),
-          certificateUsageInstructions: certificateUsageInstructions.trim(),
+          certificateExpiresOn,
           reportUsageRules: reportUsageRules.trim(),
           productCategoryName: productCategoryName.trim(),
           platformName: platformName.trim(),
@@ -313,8 +313,9 @@ export default function CertificateReportUploader({
 
       <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
         <div>
-          <label className={fieldLabelClass}>品类 *</label>
+          <label htmlFor="certificate-report-category" className={fieldLabelClass}>品类 *</label>
           <select
+            id="certificate-report-category"
             value={productCategoryName}
             onChange={(event) => setProductCategoryName(event.target.value)}
             className={fieldControlClass}
@@ -346,18 +347,18 @@ export default function CertificateReportUploader({
       <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
         <div>
           <label htmlFor="certificate-report-tested-on" className={fieldLabelClass}>证书检测日期 *</label>
-          <CertificateTestDatePicker id="certificate-report-tested-on" value={certificateTestedOn} onChange={setCertificateTestedOn} disabled={uploading} />
+          <CertificateDatePicker id="certificate-report-tested-on" label="证书检测日期" value={certificateTestedOn} onChange={setCertificateTestedOn} disabled={uploading} />
           <p className="mt-1 text-xs text-gray-500">请按报告标注的检测日期选择</p>
         </div>
         <div>
-          <label htmlFor="certificate-report-number" className={fieldLabelClass}>证书编号 *</label>
-          <input id="certificate-report-number" type="text" value={certificateNumber} onChange={(event) => setCertificateNumber(event.target.value)} maxLength={120} className={fieldControlClass} required />
+          <label htmlFor="certificate-report-expires-on" className={fieldLabelClass}>证书到期时间 *</label>
+          <CertificateDatePicker id="certificate-report-expires-on" label="证书到期时间" value={certificateExpiresOn} onChange={setCertificateExpiresOn} disabled={uploading} />
         </div>
       </div>
 
       <div>
-        <label htmlFor="certificate-report-instructions" className={fieldLabelClass}>证书使用说明 *</label>
-        <textarea id="certificate-report-instructions" value={certificateUsageInstructions} onChange={(event) => setCertificateUsageInstructions(event.target.value)} rows={3} maxLength={5000} className={`${fieldControlClass} resize-y`} required />
+        <label htmlFor="certificate-report-number" className={fieldLabelClass}>证书编号 *</label>
+        <input id="certificate-report-number" type="text" value={certificateNumber} onChange={(event) => setCertificateNumber(event.target.value)} maxLength={120} className={fieldControlClass} required />
       </div>
 
       <div>
diff --git a/lib/__tests__/certificate-report.test.ts b/lib/__tests__/certificate-report.test.ts
index b58c47a..4c77e7f 100644
--- a/lib/__tests__/certificate-report.test.ts
+++ b/lib/__tests__/certificate-report.test.ts
@@ -2,7 +2,7 @@ import {
   DEFAULT_CERTIFICATE_REPORT_USAGE_RULES,
   getCertificateReportDisplayTitle,
   isPublicCertificateReportPdf,
-  parseCertificateTestDate,
+  parseCertificateDate,
   validateCertificateReportMetadata,
 } from '@/lib/certificate-report'
 
@@ -12,7 +12,7 @@ const metadata = {
   reportTitle: '',
   certificateTestedOn: '2027-09-23',
   certificateNumber: 'CMA-2026-001',
-  certificateUsageInstructions: '使用前核对送检主体',
+  certificateExpiresOn: '2028-09-23',
   reportUsageRules: DEFAULT_CERTIFICATE_REPORT_USAGE_RULES,
   platformName: '大货',
 }
@@ -47,14 +47,25 @@ describe('检测报告字段规则', () => {
   })
 
   test('检测日期必须是真实的 YYYY-MM-DD 日期', () => {
-    expect(parseCertificateTestDate('2027-02-28')?.toISOString().slice(0, 10)).toBe('2027-02-28')
-    expect(parseCertificateTestDate('2027-02-30')).toBeNull()
-    expect(parseCertificateTestDate('2027/02/28')).toBeNull()
+    expect(parseCertificateDate('2027-02-28')?.toISOString().slice(0, 10)).toBe('2027-02-28')
+    expect(parseCertificateDate('2027-02-30')).toBeNull()
+    expect(parseCertificateDate('2027/02/28')).toBeNull()
     expect(validateCertificateReportMetadata({ ...metadata, certificateTestedOn: '2027-02-30' })).toEqual({
       error: '请选择有效的证书检测日期',
     })
   })
 
+  test('到期时间独立必填，不自动计算，并拒绝早于检测日期的日期', () => {
+    for (const certificateExpiresOn of ['', undefined, '2028-02-30', '2028/09/23']) {
+      expect(validateCertificateReportMetadata({ ...metadata, certificateExpiresOn })).toEqual({ error: '请选择有效的证书到期时间' })
+    }
+    expect(validateCertificateReportMetadata({ ...metadata, certificateExpiresOn: '2027-09-22' }))
+      .toEqual({ error: '证书到期时间不能早于检测日期' })
+    expect(validateCertificateReportMetadata({ ...metadata, certificateExpiresOn: '2027-09-23' }))
+      .toHaveProperty('value.certificateExpiresOn', new Date('2027-09-23T00:00:00.000Z'))
+    expect(validateCertificateReportMetadata(metadata)).not.toHaveProperty('value.certificateUsageInstructions')
+  })
+
   test('平台分类只接受报告专用选项，整段预置说明保持为一个文本值', () => {
     expect(validateCertificateReportMetadata({ ...metadata, platformName: '品牌' })).toHaveProperty('value')
     expect(validateCertificateReportMetadata({ ...metadata, platformName: '其它' })).toEqual({
diff --git a/lib/__tests__/material-edit-page.test.tsx b/lib/__tests__/material-edit-page.test.tsx
index ad787d1..192e575 100644
--- a/lib/__tests__/material-edit-page.test.tsx
+++ b/lib/__tests__/material-edit-page.test.tsx
@@ -1,6 +1,6 @@
 /** @jest-environment jsdom */
 
-import { act, render, screen, waitFor } from '@testing-library/react'
+import { act, fireEvent, render, screen, waitFor } from '@testing-library/react'
 import userEvent from '@testing-library/user-event'
 import { useSession } from 'next-auth/react'
 import EditMaterialPage from '@/app/edit/[id]/page'
@@ -203,12 +203,22 @@ describe('EditMaterialPage', () => {
     const kindSelect = await screen.findByLabelText('报告类别 *')
     expect(screen.getByLabelText('SPU')).toHaveValue('SPU-001')
     expect(screen.getByLabelText('证书检测日期 *')).toHaveTextContent('2027年9月23日')
-    expect(screen.queryByText('2028年9月23日')).not.toBeInTheDocument()
+    expect(screen.getByLabelText('证书到期时间 *')).toHaveTextContent('2028年9月23日')
+    expect(screen.queryByLabelText('证书使用说明 *')).not.toBeInTheDocument()
     expect(screen.getByLabelText('检测报告使用规则说明 *')).toHaveValue('第一段\n第二段')
     expect(screen.getByLabelText('平台分类')).toHaveValue('品牌')
 
     await user.selectOptions(kindSelect, '原材料')
     expect(screen.queryByLabelText('SPU')).not.toBeInTheDocument()
     expect(screen.getByLabelText('报告名称 / 检测对象 *')).toHaveValue('板材检测报告')
+    await user.click(screen.getByLabelText('证书到期时间 *'))
+    await user.click(screen.getByRole('button', { name: '2028年9月24日' }))
+    fireEvent.submit(screen.getByLabelText('报告名称 / 检测对象 *').closest('form')!)
+    await waitFor(() => expect((global.fetch as jest.Mock).mock.calls.some(([, init]) => init?.method === 'PUT')).toBe(true))
+    const [, init] = (global.fetch as jest.Mock).mock.calls.find(([, init]) => init?.method === 'PUT')!
+    expect(init.body.get('certificateTestedOn')).toBe('2027-09-23')
+    expect(init.body.get('certificateExpiresOn')).toBe('2028-09-24')
+    expect(init.body.get('reportUsageRules')).toBe('第一段\n第二段')
+    expect(init.body.has('certificateUsageInstructions')).toBe(false)
   })
 })
diff --git a/lib/__tests__/material-update.test.ts b/lib/__tests__/material-update.test.ts
index af8c2b6..19e10ca 100644
--- a/lib/__tests__/material-update.test.ts
+++ b/lib/__tests__/material-update.test.ts
@@ -63,7 +63,7 @@ describe('material-update shared rules', () => {
     reportKind: '成品',
     certificateTestedOn: '2027-09-23',
     certificateNumber: 'CMA-2026-001',
-    certificateUsageInstructions: '使用前核对送检主体',
+    certificateExpiresOn: '2028-09-23',
     reportUsageRules: '完整的报告使用规则说明',
   }
   const baseMaterial = {
@@ -250,7 +250,7 @@ describe('material-update shared rules', () => {
         reportKind: '成品',
         certificateTestedOn: new Date('2027-09-23T00:00:00.000Z'),
         certificateNumber: 'CMA-2026-001',
-        certificateUsageInstructions: '使用前核对送检主体',
+        certificateExpiresOn: new Date('2028-09-23T00:00:00.000Z'),
         reportUsageRules: '完整的报告使用规则说明',
         categoryName: '通用',
         sceneName: '通用',
@@ -271,7 +271,7 @@ describe('material-update shared rules', () => {
       reportKind: '成品',
       certificateTestedOn: new Date('2027-09-23T00:00:00.000Z'),
       certificateNumber: 'CMA-2026-001',
-      certificateUsageInstructions: '使用前核对送检主体',
+      certificateExpiresOn: new Date('2028-09-23T00:00:00.000Z'),
       reportUsageRules: '完整的报告使用规则说明',
       renderer: '',
     }
diff --git a/lib/__tests__/materials-share-security.test.ts b/lib/__tests__/materials-share-security.test.ts
index fa27378..b4d5a34 100644
--- a/lib/__tests__/materials-share-security.test.ts
+++ b/lib/__tests__/materials-share-security.test.ts
@@ -128,7 +128,12 @@ describe('materials share security', () => {
   test.each([null, { user: { id: 'admin-1' } }])('公开检测报告返回 PDF 和图片，保留源文件隔离 (%j)', async (session) => {
     ;(getServerSession as jest.Mock).mockResolvedValue(session)
     ;(prisma.user.findUnique as jest.Mock).mockResolvedValue({ role: 'SYSTEM_ADMIN' })
-    ;(prisma.material.findFirst as jest.Mock).mockResolvedValue(buildMaterial({ materialType: '证书-检测报告' }))
+    ;(prisma.material.findFirst as jest.Mock).mockResolvedValue(buildMaterial({
+      materialType: '证书-检测报告',
+      certificateTestedOn: new Date('2026-09-23'),
+      certificateExpiresOn: new Date('2027-09-23'),
+      reportUsageRules: '唯一的完整规则说明',
+    }))
     const pdfUrl = 'https://s3.jiansun.vip/gongxiangpan/public-display/certificate-report/material-1/pdf/0-report.pdf'
     const imageUrl = 'https://s3.jiansun.vip/gongxiangpan/public-display/certificate-report/material-1/image/1-report.jpg'
     ;(prisma.materialAsset.findMany as jest.Mock).mockResolvedValue([
@@ -144,6 +149,11 @@ describe('materials share security', () => {
     expect(body.assets[1]).toMatchObject({ fileUrl: imageUrl, fileKind: 'image' })
     expect(body.assets[2].fileUrl).toBe('')
     expect(body.assets[3].fileUrl).toBe('')
+    expect(body.certificateTestedOn).toBe('2026-09-23T00:00:00.000Z')
+    expect(body.certificateExpiresOn).toBe('2027-09-23T00:00:00.000Z')
+    expect(body.reportUsageRules).toBe('唯一的完整规则说明')
+    expect(body).not.toHaveProperty('certificateUsageInstructions')
+    expect((prisma.material.findFirst as jest.Mock).mock.calls[0][0].select).not.toHaveProperty('certificateUsageInstructions')
   })
 
   test('未满15天的视频分享链接保留有效，但不返回任何视频内容', async () => {
diff --git a/lib/certificate-report.ts b/lib/certificate-report.ts
index 40a1837..8ee5be3 100644
--- a/lib/certificate-report.ts
+++ b/lib/certificate-report.ts
@@ -65,7 +65,7 @@ export function normalizeReportTitle(value: string | null | undefined): string |
   return normalized || null
 }
 
-export function parseCertificateTestDate(value: unknown): Date | null {
+export function parseCertificateDate(value: unknown): Date | null {
   if (typeof value !== 'string' || !/^\d{4}-\d{2}-\d{2}$/.test(value)) return null
   const parsed = new Date(`${value}T00:00:00.000Z`)
   return Number.isNaN(parsed.getTime()) || parsed.toISOString().slice(0, 10) !== value
@@ -78,8 +78,8 @@ export function validateCertificateReportMetadata(input: {
   productModel: unknown
   reportTitle: unknown
   certificateTestedOn: unknown
+  certificateExpiresOn: unknown
   certificateNumber: unknown
-  certificateUsageInstructions: unknown
   reportUsageRules: unknown
   platformName: unknown
 }, legacyPlatformName = ''):
@@ -87,8 +87,8 @@ export function validateCertificateReportMetadata(input: {
   | { value: {
     reportKind: CertificateReportKind
     certificateTestedOn: Date
+    certificateExpiresOn: Date
     certificateNumber: string
-    certificateUsageInstructions: string
     reportUsageRules: string
   } } {
   const reportKind = input.reportKind
@@ -103,18 +103,15 @@ export function validateCertificateReportMetadata(input: {
   if (reportKind === CERTIFICATE_REPORT_KIND.FINISHED && !productModel && !reportTitle) {
     return { error: 'SPU 和 报告名称/检测对象 至少填写一个' }
   }
-  const certificateTestedOn = parseCertificateTestDate(input.certificateTestedOn)
+  const certificateTestedOn = parseCertificateDate(input.certificateTestedOn)
   if (!certificateTestedOn) return { error: '请选择有效的证书检测日期' }
+  const certificateExpiresOn = parseCertificateDate(input.certificateExpiresOn)
+  if (!certificateExpiresOn) return { error: '请选择有效的证书到期时间' }
+  if (certificateExpiresOn < certificateTestedOn) return { error: '证书到期时间不能早于检测日期' }
   const certificateNumber = typeof input.certificateNumber === 'string' ? input.certificateNumber.trim() : ''
   if (!certificateNumber || certificateNumber.length > 120) {
     return { error: '请填写证书编号（不超过120字）' }
   }
-  const certificateUsageInstructions = typeof input.certificateUsageInstructions === 'string'
-    ? input.certificateUsageInstructions.trim()
-    : ''
-  if (!certificateUsageInstructions || certificateUsageInstructions.length > 5000) {
-    return { error: '请填写证书使用说明（不超过5000字）' }
-  }
   const reportUsageRules = typeof input.reportUsageRules === 'string' ? input.reportUsageRules.trim() : ''
   if (!reportUsageRules || reportUsageRules.length > 10000) {
     return { error: '请填写检测报告使用规则说明（不超过10000字）' }
@@ -129,8 +126,8 @@ export function validateCertificateReportMetadata(input: {
     value: {
       reportKind,
       certificateTestedOn,
+      certificateExpiresOn,
       certificateNumber,
-      certificateUsageInstructions,
       reportUsageRules,
     },
   }
diff --git a/lib/material-update.ts b/lib/material-update.ts
index 18acef1..4841a67 100644
--- a/lib/material-update.ts
+++ b/lib/material-update.ts
@@ -43,7 +43,7 @@ export interface MaterialUpdateInput {
   reportKind?: string | null
   certificateTestedOn?: string | null
   certificateNumber?: string | null
-  certificateUsageInstructions?: string | null
+  certificateExpiresOn?: string | null
   reportUsageRules?: string | null
   categoryName?: string | null
   sceneName?: string | null
@@ -196,7 +196,7 @@ async function updateMaterialWithSharedRulesLocked(options: UpdateMaterialOption
   const hasReportKindField = Object.prototype.hasOwnProperty.call(input, 'reportKind')
   const hasCertificateTestedOnField = Object.prototype.hasOwnProperty.call(input, 'certificateTestedOn')
   const hasCertificateNumberField = Object.prototype.hasOwnProperty.call(input, 'certificateNumber')
-  const hasCertificateUsageInstructionsField = Object.prototype.hasOwnProperty.call(input, 'certificateUsageInstructions')
+  const hasCertificateExpiresOnField = Object.prototype.hasOwnProperty.call(input, 'certificateExpiresOn')
   const hasReportUsageRulesField = Object.prototype.hasOwnProperty.call(input, 'reportUsageRules')
   const hasTaskNoField = Object.prototype.hasOwnProperty.call(input, 'taskNo')
   const hasDingtalkApprovalNoField = Object.prototype.hasOwnProperty.call(input, 'dingtalkApprovalNo')
@@ -237,9 +237,9 @@ async function updateMaterialWithSharedRulesLocked(options: UpdateMaterialOption
         ? input.certificateTestedOn
         : material.certificateTestedOn?.toISOString().slice(0, 10),
       certificateNumber: hasCertificateNumberField ? input.certificateNumber : material.certificateNumber,
-      certificateUsageInstructions: hasCertificateUsageInstructionsField
-        ? input.certificateUsageInstructions
-        : material.certificateUsageInstructions,
+      certificateExpiresOn: hasCertificateExpiresOnField
+        ? input.certificateExpiresOn
+        : material.certificateExpiresOn?.toISOString().slice(0, 10),
       reportUsageRules: hasReportUsageRulesField ? input.reportUsageRules : material.reportUsageRules,
       platformName,
     }, isCertificateReportMaterialType(material.materialType) ? material.platformName : '')
@@ -389,7 +389,7 @@ async function updateMaterialWithSharedRulesLocked(options: UpdateMaterialOption
     reportKind: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.reportKind : null,
     certificateTestedOn: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.certificateTestedOn : null,
     certificateNumber: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.certificateNumber : null,
-    certificateUsageInstructions: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.certificateUsageInstructions : null,
+    certificateExpiresOn: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.certificateExpiresOn : null,
     reportUsageRules: certificateReportMetadata && 'value' in certificateReportMetadata ? certificateReportMetadata.value.reportUsageRules : null,
     categoryName: shouldUseGeneralCategoryScene ? '通用' : (categoryName ?? material.categoryName),
     sceneName: shouldUseGeneralCategoryScene ? '通用' : (sceneName ?? material.sceneName),