diff --git a/apps/frontend/src/pages/admin/panels/AfterSalesPanel.tsx b/apps/frontend/src/pages/admin/panels/AfterSalesPanel.tsx
index 13486555..492fb3a5 100644
--- a/apps/frontend/src/pages/admin/panels/AfterSalesPanel.tsx
+++ b/apps/frontend/src/pages/admin/panels/AfterSalesPanel.tsx
@@ -28,6 +28,7 @@ import {
 import type { UploadedFile, WorkerAfterSalesCase, WorkOrder } from '@/types/worker-platform'
 import { ADMIN_DEFAULT_PAGE_SIZE, buildAdminTablePagination } from '@/utils/admin-pagination'
 import { formatAdminDateTime } from '@/utils/admin-time'
+import { uniqueUploadedFiles } from '@/utils/image-identity'
 import { asRecord, formatMoney } from './shared'
 
 type AfterSalesCreateFormValues = {
@@ -447,24 +448,28 @@ function getAfterSalesSnapshotFiles(item: WorkerAfterSalesCase): UploadedFile[]
   const acceptance = asRecord(snapshot.acceptance)
   const files = Array.isArray(acceptance.files) ? acceptance.files : []
   const imageUrls = Array.isArray(acceptance.imageUrls) ? acceptance.imageUrls : []
-  return [
-    ...files.map((value) => asRecord(value)),
-    ...imageUrls.map((url) => asRecord({ url: String(url || '') })),
-  ]
-    .map((file) => {
-      const url = String(file.url || '').trim()
-      if (!url) return null
-      return {
-        objectKey: String(file.objectKey || file.object_key || ''),
-        url,
-        thumbnailUrl: String(file.thumbnailUrl || file.thumbnail_url || url),
-        mediumUrl: String(file.mediumUrl || file.medium_url || url),
-        filename: String(file.filename || '验收图片'),
-        contentType: String(file.contentType || ''),
-        size: Number(file.size || 0),
-      } satisfies UploadedFile
-    })
-    .filter((file): file is UploadedFile => file !== null)
+  // 验收资料里同一张图会同时存在于 files 与 imageUrls（历史冗余表示），
+  // 必须按图片身份去重，否则固化验收图会把同一张图重复渲染多次。
+  return uniqueUploadedFiles(
+    [
+      ...files.map((value) => asRecord(value)),
+      ...imageUrls.map((url) => asRecord({ url: String(url || '') })),
+    ]
+      .map((file) => {
+        const url = String(file.url || '').trim()
+        if (!url) return null
+        return {
+          objectKey: String(file.objectKey || file.object_key || ''),
+          url,
+          thumbnailUrl: String(file.thumbnailUrl || file.thumbnail_url || url),
+          mediumUrl: String(file.mediumUrl || file.medium_url || url),
+          filename: String(file.filename || '验收图片'),
+          contentType: String(file.contentType || ''),
+          size: Number(file.size || 0),
+        } satisfies UploadedFile
+      })
+      .filter((file): file is UploadedFile => file !== null),
+  )
 }
 
 export default AfterSalesPanel