diff --git a/api/src/report-materials/import-review.service.ts b/api/src/report-materials/import-review.service.ts
index ad0b6d4..81ae1fa 100644
--- a/api/src/report-materials/import-review.service.ts
+++ b/api/src/report-materials/import-review.service.ts
@@ -13,6 +13,7 @@ import {
   mappedCoreValue,
   mappedCorePatchValue,
   dynamicValues,
+  signatureIdentityReportValues,
   jsonRecord,
   hasValue,
   normalizeImageExtension,
@@ -390,8 +391,24 @@ export class ReportImportReviewService {
       const applicationId = typeof payload.applicationId === 'string' ? payload.applicationId : undefined;
       const importedDrainage = jsonRecord(payload.drainageInfo);
       const importedReportValues = jsonRecord(importedDrainage.signatureReportValues);
-      const buildBody = (current?: { drainageInfo: Prisma.JsonValue | null }) => {
+      const [reportFields, tenant, application] = await Promise.all([
+        this.smsConfig.getApplicationReportFields(applicationId, 'signature'),
+        this.prisma.tenant.findUnique({ where: { id: batch.tenantId }, select: { name: true } }),
+        applicationId
+          ? this.prisma.smsApplication.findUnique({ where: { id: applicationId }, select: { name: true } })
+          : Promise.resolve(null),
+      ]);
+      const buildBody = (current?: { drainageInfo: Prisma.JsonValue | null; purpose?: string | null }) => {
         const currentDrainage = jsonRecord(current?.drainageInfo);
+        const purpose = Object.prototype.hasOwnProperty.call(payload, 'purpose')
+          ? String(payload.purpose ?? '')
+          : current?.purpose;
+        const identityValues = signatureIdentityReportValues(reportFields, {
+          signatureName: name,
+          purpose,
+          enterpriseName: tenant?.name,
+          applicationName: application?.name,
+        });
         return {
           applicationId,
           name,
@@ -402,6 +419,7 @@ export class ReportImportReviewService {
             ...currentDrainage,
             signatureReportValues: {
               ...jsonRecord(currentDrainage.signatureReportValues),
+              ...identityValues,
               ...importedReportValues,
             },
           },
diff --git a/api/src/report-materials/report-materials.helpers.ts b/api/src/report-materials/report-materials.helpers.ts
index 12b9621..f392f67 100644
--- a/api/src/report-materials/report-materials.helpers.ts
+++ b/api/src/report-materials/report-materials.helpers.ts
@@ -237,6 +237,33 @@ export function dynamicValues(mappings: ImportMapping[], values: Record<string,
   );
 }
 
+export function signatureIdentityReportValues(
+  fields: Array<{ code: string; name: string; fieldType?: string }>,
+  identity: {
+    signatureName?: string;
+    purpose?: string | null;
+    enterpriseName?: string;
+    applicationName?: string;
+  },
+) {
+  return Object.fromEntries(
+    fields.flatMap((field) => {
+      if (field.fieldType && field.fieldType !== 'string') return [];
+      const semantic = normalizeHeader(`${field.code}/${field.name}`);
+      const value = /短信签名|签名名称|signaturename|sms(?:signature|sign)|^sign$/.test(semantic)
+        ? identity.signatureName
+        : /签名用途|签名依据|purpose/.test(semantic)
+          ? identity.purpose
+          : /企业名称|公司名称|enterprisename|companyname/.test(semantic)
+            ? identity.enterpriseName
+            : /应用名称|applicationname|appname/.test(semantic)
+              ? identity.applicationName
+              : undefined;
+      return hasValue(value) ? [[field.code, value]] : [];
+    }),
+  );
+}
+
 export function jsonRecord(value: unknown): Record<string, unknown> {
   return value && typeof value === 'object' && !Array.isArray(value) ? (value as Record<string, unknown>) : {};
 }
diff --git a/api/src/report-materials/report-materials.service.spec.ts b/api/src/report-materials/report-materials.service.spec.ts
index e89c336..f4446cb 100644
--- a/api/src/report-materials/report-materials.service.spec.ts
+++ b/api/src/report-materials/report-materials.service.spec.ts
@@ -1,7 +1,7 @@
 import ExcelJS from 'exceljs';
 import { createHash } from 'node:crypto';
 import { ReportMaterialsService } from './report-materials.service';
-import { mappedCorePatchValue } from './report-materials.helpers';
+import { mappedCorePatchValue, signatureIdentityReportValues } from './report-materials.helpers';
 
 describe('ReportMaterialsService', () => {
   it('requires an enterprise application before parsing an import workbook', async () => {
@@ -43,6 +43,27 @@ describe('ReportMaterialsService', () => {
       ),
     ).toBeUndefined();
   });
+
+  it('materializes system identity fields without inventing a missing signature purpose', () => {
+    const fields = [
+      { code: 'qaSignatureName', name: '短信签名', fieldType: 'string' },
+      { code: 'qaSignaturePurpose', name: '签名用途', fieldType: 'string' },
+      { code: 'qaEnterpriseName', name: '企业名称', fieldType: 'string' },
+      { code: 'qaApplicationName', name: '应用名称', fieldType: 'string' },
+      { code: 'qaLicenseImage', name: '营业执照图片', fieldType: 'image' },
+    ];
+    expect(
+      signatureIdentityReportValues(fields, {
+        signatureName: '【导入测试】',
+        enterpriseName: '测试企业',
+        applicationName: '测试应用',
+      }),
+    ).toEqual({
+      qaSignatureName: '【导入测试】',
+      qaEnterpriseName: '测试企业',
+      qaApplicationName: '测试应用',
+    });
+  });
   it('builds an official XLSX import template with documented signature columns', async () => {
     const operationLog = { create: jest.fn().mockResolvedValue({ id: 'log-template' }) };
     const service = new ReportMaterialsService({ operationLog } as never, {} as never, {} as never);
@@ -602,6 +623,79 @@ describe('ReportMaterialsService', () => {
     });
   });
 
+  it('approves an imported signature by supplying configured identity fields from real entities', async () => {
+    const item = {
+      id: 'item-identity-1',
+      rowNumber: 2,
+      reportType: 'signature',
+      targetId: null,
+      status: 'pending_review',
+      payload: {
+        tenantId: 'tenant-1',
+        applicationId: 'app-1',
+        name: '【导入测试】',
+        purpose: '验证码通知',
+        drainageInfo: {
+          signatureReportValues: {
+            qaLicenseImage: { fileObjectId: 'image-1', fileName: 'license.png', contentType: 'image/png' },
+          },
+        },
+      },
+    };
+    const prisma = {
+      reportMaterialImportBatch: {
+        findUnique: jest.fn().mockResolvedValue({
+          id: 'batch-identity-1',
+          tenantId: 'tenant-1',
+          applicationId: 'app-1',
+          reportType: 'signature',
+          items: [item],
+        }),
+        update: jest.fn().mockResolvedValue({}),
+      },
+      reportMaterialImportItem: {
+        update: jest.fn().mockResolvedValue({}),
+        groupBy: jest.fn().mockResolvedValue([{ status: 'approved', _count: { _all: 1 } }]),
+      },
+      smsSignature: {
+        findFirst: jest.fn().mockResolvedValue(null),
+        findUnique: jest.fn().mockResolvedValue(null),
+      },
+      tenant: { findUnique: jest.fn().mockResolvedValue({ name: '测试企业' }) },
+      smsApplication: { findUnique: jest.fn().mockResolvedValue({ name: '测试应用' }) },
+    };
+    const smsConfig = {
+      getApplicationReportFields: jest.fn().mockResolvedValue([
+        { code: 'qaSignatureName', name: '短信签名', fieldType: 'string' },
+        { code: 'qaSignaturePurpose', name: '签名用途', fieldType: 'string' },
+        { code: 'qaEnterpriseName', name: '企业名称', fieldType: 'string' },
+        { code: 'qaApplicationName', name: '应用名称', fieldType: 'string' },
+        { code: 'qaLicenseImage', name: '营业执照图片', fieldType: 'image' },
+      ]),
+      createSignature: jest.fn().mockImplementation(({ drainageInfo }: { drainageInfo: { signatureReportValues: Record<string, unknown> } }) => {
+        expect(drainageInfo.signatureReportValues).toEqual(expect.objectContaining({
+          qaSignatureName: '【导入测试】',
+          qaSignaturePurpose: '验证码通知',
+          qaEnterpriseName: '测试企业',
+          qaApplicationName: '测试应用',
+          qaLicenseImage: expect.objectContaining({ fileObjectId: 'image-1' }),
+        }));
+        return Promise.resolve({ id: 'signature-created-1' });
+      }),
+      approveSignature: jest.fn().mockResolvedValue({ id: 'signature-created-1', auditStatus: 'approved' }),
+    };
+    const service = new ReportMaterialsService(prisma as never, {} as never, smsConfig as never);
+
+    await expect(service.reviewImportItems('batch-identity-1', {
+      decision: 'approve',
+      itemIds: [item.id],
+      reviewerId: 'reviewer-1',
+    })).resolves.toMatchObject({ status: 'approved', approvedCount: 1, failedCount: 0 });
+    expect(smsConfig.approveSignature).toHaveBeenCalledWith('signature-created-1', expect.objectContaining({
+      reviewerId: 'reviewer-1',
+    }));
+  });
+
   it('calculates generated batch totals and success rate from per-channel report tasks', async () => {
     const prisma = {
       reportMaterialBatch: {
diff --git a/docs/system-functional-test-cases.md b/docs/system-functional-test-cases.md
index 6b10eb3..0d04dfa 100644
--- a/docs/system-functional-test-cases.md
+++ b/docs/system-functional-test-cases.md
@@ -3631,8 +3631,9 @@ npm run verify:phase8
 | TC-REPORT-MATERIAL-IMPORT-001 | 将含两行表头、文本列和营业执照/身份证等内嵌图片的 WPS 在线表格另存为 `.xlsx`，选择企业、应用和签名资料后解析。 | NestJS 读取真实工作表及图片锚点，返回列、组合表头、前十行和图片数预览；原文件写 MinIO，导入批次写 PostgreSQL；解析和提交审核均不直接修改签名、不建通道任务。 |
 | TC-REPORT-MATERIAL-IMPORT-002 | 将源列映射到签名及动态报备字段后提交导入，再进入短信签名审核的“导入批次审核”页签查看100行数据并一次通过其中勾选的多行。 | 每行先以新增/修改/无效状态落待审核明细；只有通过行才创建或修改真实签名并写审核人、审核时间，随后进入待生成资料池；未选行保持待审核，页面不要求逐行打开确认。 |
 | TC-REPORT-MATERIAL-IMPORT-003 | 导入引流资料，其中一行引用不存在或未审核签名；在引流审核页批量通过合法行并驳回部分行，不填写驳回原因。 | 合法行审核通过后创建/更新真实 `SmsDrainageInfo` 并进入待生成池；非法行保留行号和原因；空驳回原因可正常提交，同批其他行不受影响，也不自动创建通道报备任务。 |
-| TC-REPORT-MATERIAL-IMPORT-004 | 导入文件中同时包含已存在对象的修改和不存在对象的新增，提交审核前后分别读取业务表。 | 提交审核前业务表完全不变；审核页展示新增/修改及原数据快照；通过后才应用变更，重复点击已处理行不会再次递增材料版本或重复创建对象。 |
-| TC-REPORT-MATERIAL-IMPORT-005 | 分别在签名和引流审核页面按文件名、状态、时间筛选导入批次，翻页后选择整批或部分明细审核。 | 查询、总数和分页来自真实后端；批次汇总待审、通过、驳回、无效数量，刷新后保持一致。 |
+| TC-REPORT-MATERIAL-IMPORT-004 | 应用将短信签名、签名用途、企业名称和应用名称配置为必填报备字段；导入一份包含签名、用途和标准 Drawing 图片的 XLSX，审核通过后生成并导出报备资料。 | 导入审核从签名、企业、应用实体物化系统身份字段，显式映射值优先；真实缺失值仍被拦截。签名审核通过并进入待生成池，报备批次及导出文件使用真实 PostgreSQL/对象存储数据且图片可回读。 |
+| TC-REPORT-MATERIAL-IMPORT-005 | 导入文件中同时包含已存在对象的修改和不存在对象的新增，提交审核前后分别读取业务表。 | 提交审核前业务表完全不变；审核页展示新增/修改及原数据快照；通过后才应用变更，重复点击已处理行不会再次递增材料版本或重复创建对象。 |
+| TC-REPORT-MATERIAL-IMPORT-006 | 分别在签名和引流审核页面按文件名、状态、时间筛选导入批次，翻页后选择整批或部分明细审核。 | 查询、总数和分页来自真实后端；批次汇总待审、通过、驳回、无效数量，刷新后保持一致。 |
 | TC-REPORT-CHANNEL-FIELD-001 | 在同一通道分别打开签名和引流字段配置，添加字段、修改通道表头、上下排序、设置必填/列宽/图片宽高后保存并刷新。 | 两类配置相互独立且完整持久化；刷新后字段池、映射表头和顺序一致；重复字段、停用字段和非法尺寸由 API 拒绝或归一化。 |
 | TC-REPORT-BATCH-001 | 一个应用配置两个生效通道，选择一个待报备签名创建统一批次。 | 系统从真实应用路由展开两个通道，生成两个独立通道任务和两个 `.xlsx`；每个文件表头名称、列顺序和列宽均来自对应通道配置，批次可下载两份文件。 |
 | TC-REPORT-BATCH-002 | 两个通道对同一标准字段配置不同表头和顺序，并包含图片列，生成批次后分别用 WPS 打开。 | 两份工作簿各自使用对应通道映射，图片直接显示在数据行内且尺寸按通道配置；文件不是 URL 清单，文本与图片属于同一材料快照。 |