diff --git a/resources/views/business/pages/courier-payables/agreement-signing.blade.php b/resources/views/business/pages/courier-payables/agreement-signing.blade.php
index 74086660..35750367 100644
--- a/resources/views/business/pages/courier-payables/agreement-signing.blade.php
+++ b/resources/views/business/pages/courier-payables/agreement-signing.blade.php
@@ -1270,7 +1270,7 @@
                             </div>
                             <div class="agreement-field">
                                 <label for="agreement-company-name">公司全称 <span class="agreement-required" aria-hidden="true">*</span></label>
-                                <input class="agreement-control" id="agreement-company-name" name="company_full_name" type="text" value="{{ $agreementCompanyName }}" data-company-name autocomplete="organization" required>
+                                <input class="agreement-control" id="agreement-company-name" name="company_full_name" type="text" value="{{ $agreementCompanyName }}" data-company-name data-subject-linked-name autocomplete="organization" required>
                             </div>
                             <div class="agreement-field">
                                 <label for="agreement-deadline">签署截止日期 <span class="agreement-required" aria-hidden="true">*</span></label>
@@ -1393,7 +1393,7 @@
                         <div class="agreement-form-grid" data-template-fields="cooperation-contract" hidden>
                             <div class="agreement-field">
                                 <label for="agreement-cooperation-party-a-name">甲方名称 <span class="agreement-required" aria-hidden="true">*</span></label>
-                                <input class="agreement-control" id="agreement-cooperation-party-a-name" name="cooperation_party_a_name" type="text" value="{{ $agreementCompanyName }}" required>
+                                <input class="agreement-control" id="agreement-cooperation-party-a-name" name="cooperation_party_a_name" type="text" value="{{ $agreementCompanyName }}" data-subject-linked-name required>
                             </div>
                             <div class="agreement-field">
                                 <label for="agreement-cooperation-party-a-phone">甲方电话 <span class="agreement-required" aria-hidden="true">*</span></label>
@@ -1710,7 +1710,6 @@
             var subjectList = root.querySelector('[data-subject-list]');
             var subjectForm = root.querySelector('[data-subject-form]');
             var subjectSelect = root.querySelector('[data-signing-subject-select]');
-            var companyNameInput = root.querySelector('[data-company-name]');
             var subjectFormTitle = root.querySelector('[data-subject-form-title]');
             var subjectFormError = root.querySelector('[data-subject-form-error]');
             var subjectFormCancel = root.querySelector('[data-subject-form-cancel]');
@@ -1787,6 +1786,16 @@
                 });
             }
 
+            function syncSubjectLinkedNames(subjectName) {
+                if (!subjectName) {
+                    return;
+                }
+
+                root.querySelectorAll('[data-subject-linked-name]').forEach(function (control) {
+                    control.value = subjectName;
+                });
+            }
+
             function renderSubjectList() {
                 if (!subjectList) {
                     return;
@@ -2191,6 +2200,9 @@
                         subjects = payload.subjects || subjects;
                         renderSubjectList();
                         renderSubjectSelect(defaultButton.dataset.subjectDefault);
+                        var selectedOption = subjectSelect && subjectSelect.options[subjectSelect.selectedIndex];
+                        syncSubjectLinkedNames(selectedOption && selectedOption.value);
+                        refreshPreview();
                         announce(payload.message || '默认签署主体已切换');
                     } catch (error) {
                         subjectFormError.textContent = error.message;
@@ -2226,9 +2238,9 @@
                         subjects = payload.subjects || subjects;
                         renderSubjectList();
                         renderSubjectSelect(payload.subject && payload.subject.id);
-                        if (payload.subject && companyNameInput) {
+                        if (payload.subject && subjectSelect) {
                             subjectSelect.value = payload.subject.name;
-                            companyNameInput.value = payload.subject.name;
+                            syncSubjectLinkedNames(payload.subject.name);
                             refreshPreview();
                         }
                         closeSubjectModal();
@@ -2245,8 +2257,8 @@
             if (subjectSelect) {
                 subjectSelect.addEventListener('change', function () {
                     var option = subjectSelect.options[subjectSelect.selectedIndex];
-                    if (option && !option.dataset.subjectFallback && companyNameInput) {
-                        companyNameInput.value = option.value;
+                    if (option && !option.dataset.subjectFallback) {
+                        syncSubjectLinkedNames(option.value);
                     }
                     refreshPreview();
                 });
diff --git a/tests/Feature/Business/AgreementSigningPageTest.php b/tests/Feature/Business/AgreementSigningPageTest.php
index 3acd1f35..cd244658 100644
--- a/tests/Feature/Business/AgreementSigningPageTest.php
+++ b/tests/Feature/Business/AgreementSigningPageTest.php
@@ -3,6 +3,7 @@
 namespace Tests\Feature\Business;
 
 use App\Models\Auth\Permission;
+use App\Services\Esign\EsignClient;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Tests\Feature\FeatureTestCase;
 
@@ -29,7 +30,7 @@ class AgreementSigningPageTest extends FeatureTestCase
             ->assertSeeText('签署任务')
             ->assertSeeText('发起签章')
             ->assertSeeText('模板管理')
-            ->assertSeeText('E签宝未连接')
+            ->assertSeeText(EsignClient::configured() ? 'E签宝已连接' : 'E签宝未连接')
             ->assertSeeText('还没有协议签署任务')
             ->assertSeeText('收款账户变更证明.doc')
             ->assertSeeText('收款账户证明文件.doc')
@@ -51,7 +52,7 @@ class AgreementSigningPageTest extends FeatureTestCase
             ->assertOk()
             ->assertSee('data-signing-request-form', false)
             ->assertSee('data-agreement-preview', false)
-            ->assertSee('data-sign-request-send disabled', false)
+            ->assertSee('data-sign-request-send', false)
             ->assertDontSee('data-agreement-step-panel', false)
             ->assertSeeText('发起签章请求')
             ->assertSeeText('快递公司')
@@ -60,6 +61,7 @@ class AgreementSigningPageTest extends FeatureTestCase
             ->assertSeeText('TPL-ACCOUNT-CERT-V2')
             ->assertSeeText('我方签署主体')
             ->assertSeeText('公司全称')
+            ->assertSee('name="company_full_name" type="text" value="My Company" data-company-name data-subject-linked-name', false)
             ->assertSeeText('签署截止日期')
             ->assertSeeText('对方E签宝账号')
             ->assertSeeText('合作合同统一使用我方账号 18052733960')
@@ -110,6 +112,7 @@ class AgreementSigningPageTest extends FeatureTestCase
             ->assertSee('data-template-fields="cooperation-contract"', false)
             ->assertSee('data-template-preview="cooperation-contract"', false)
             ->assertSeeText('甲方名称')
+            ->assertSee('name="cooperation_party_a_name" type="text" value="My Company" data-subject-linked-name', false)
             ->assertSeeText('乙方电话')
             ->assertSeeText('协议开始日期')
             ->assertSeeText('协议结束日期')