diff --git a/furniture-3d-system/src/server/services/__tests__/oa-board-sync.service.test.ts b/furniture-3d-system/src/server/services/__tests__/oa-board-sync.service.test.ts
index aabb70ad..f4379087 100644
--- a/furniture-3d-system/src/server/services/__tests__/oa-board-sync.service.test.ts
+++ b/furniture-3d-system/src/server/services/__tests__/oa-board-sync.service.test.ts
@@ -1,5 +1,6 @@
 import {
   calculateOaBoardOverallActualDays,
+  calculateOaBoardPricingFlowActualDays,
   getRunningTasks,
   type OaBoardLifecycleFlowRecord,
 } from '../oa-board-sync.service'
@@ -71,3 +72,39 @@ describe('OA 看板当前任务选择', () => {
     expect(tasks[0]?.taskId).toBe('new-running-task')
   })
 })
+describe('OA 看板限价时效', () => {
+  it('限价子流程尚未发起时，从首单和美术并行流程最后完成时间开始计算', () => {
+    const actualDays = calculateOaBoardPricingFlowActualDays(
+      [
+        {
+          flowType: 'review',
+          status: 'COMPLETED',
+          result: 'AGREE',
+          fieldSnapshots: [
+            {
+              fieldName: '是否需要视觉出图',
+              fieldValue: '视觉出图',
+              fieldExtValue: null,
+              normalizedValue: '视觉出图',
+              metadata: null,
+            },
+          ],
+        },
+        {
+          flowType: 'order',
+          status: 'COMPLETED',
+          finishedAtSource: new Date('2026-08-01T05:00:00.000Z'),
+        },
+        {
+          flowType: 'art',
+          status: 'COMPLETED',
+          finishedAtSource: new Date('2026-08-02T05:00:00.000Z'),
+        },
+      ] as never,
+      '限价-发起',
+      new Date('2026-08-04T05:00:00.000Z'),
+    )
+
+    expect(actualDays).toBe(2)
+  })
+})
diff --git a/furniture-3d-system/src/server/services/oa-board-sync.service.ts b/furniture-3d-system/src/server/services/oa-board-sync.service.ts
index f8281ca6..984526cd 100644
--- a/furniture-3d-system/src/server/services/oa-board-sync.service.ts
+++ b/furniture-3d-system/src/server/services/oa-board-sync.service.ts
@@ -1984,6 +1984,39 @@ function pickFlowActualDays(records: NormalizedFlowRecord[], flowType: OaBoardFl
   return Number(Math.max(...values).toFixed(2))
 }
 
+export function calculateOaBoardPricingFlowActualDays(
+  records: NormalizedFlowRecord[],
+  pendingStageName: string | null,
+  now = new Date(),
+) {
+  const pricingActual = pickFlowActualDays(records, 'pricing')
+  if (pricingActual !== null) return pricingActual
+
+  // 限价子流程尚未发起时，待发起阶段已由前序流程完成触发。
+  // 该阶段从最后一个必经的并行流程完成时开始计时，直到真正发起限价。
+  if (pendingStageName !== '限价-发起') return null
+
+  const reviewRecord = records.find((record) => record.flowType === 'review') ?? null
+  const orderRecord = records.find((record) => record.flowType === 'order') ?? null
+  const artRecord = records.find((record) => record.flowType === 'art') ?? null
+  const orderFinishedAt =
+    getFlowLifecycleStatus(orderRecord) === 'COMPLETED' ? orderRecord?.finishedAtSource ?? null : null
+  if (!orderFinishedAt) return null
+
+  const artFinishedAt = isVisualDesignRequired(reviewRecord)
+    ? getFlowLifecycleStatus(artRecord) === 'COMPLETED'
+      ? artRecord?.finishedAtSource ?? null
+      : null
+    : null
+  if (isVisualDesignRequired(reviewRecord) && !artFinishedAt) return null
+
+  const startedAt = [orderFinishedAt, artFinishedAt]
+    .filter((value): value is Date => Boolean(value))
+    .sort((left, right) => right.getTime() - left.getTime())[0]
+
+  return startedAt ? calculateHours(startedAt, null, now) : null
+}
+
 function buildTimelineMetrics(
   records: NormalizedFlowRecord[],
   productType: string | null,
@@ -2066,7 +2099,7 @@ function buildTimelineMetrics(
     pricingParallelActual,
   ])
   const artActual = pickFlowActualDays(records, 'art')
-  const pricingFlowActual = pickFlowActualDays(records, 'pricing')
+  const pricingFlowActual = calculateOaBoardPricingFlowActualDays(records, pendingStageName)
   const listingActual = pickFlowActualDays(records, 'main')
   const definitions: TimelineMetricDefinition[] = [
     {