diff --git a/src/views/modules/eam/com_project_proof_record.vue b/src/views/modules/eam/com_project_proof_record.vue
index 56075f0..31d06b0 100644
--- a/src/views/modules/eam/com_project_proof_record.vue
+++ b/src/views/modules/eam/com_project_proof_record.vue
@@ -654,6 +654,7 @@
   import moment from 'moment';
   import 'moment/locale/zh-cn';
   import {downLoadObjectFile} from "../../../api/eam/eam_object_list";
+  import {previewOssFileById2} from '@/api/oss/oss';
   import async from "async";
   import {EventBus} from "../../../main";
   import {getSiteAndBuByUserName} from "../../../api/qc/qc";
@@ -2316,19 +2317,26 @@
           })
         }
         else if (office.includes(row.fileType.toLowerCase())) {
-          if (row.fileType.toLowerCase() === 'doc' || row.fileType.toLowerCase() === 'docx') {
-            type = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
-          } else if (row.fileType.toLowerCase() === 'ppt' || row.fileType.toLowerCase() === 'pptx') {
-            type = 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
+          const lowerType = row.fileType.toLowerCase()
+          if (lowerType === 'ppt' || lowerType === 'pptx') {
+            this.$message.warning('该文件格式暂不支持预览，请下载后查看')
+            return
+          }
+          // Office文件不支持预览
+          if (lowerType === 'doc' || lowerType === 'ppt' || lowerType === 'pptx') {
+            this.$message.warning('该文件格式暂不支持预览，请下载后查看')
+            return
+          }
+          // Word / Excel 通过后端转 PDF 后预览
+          if (lowerType === 'docx') {
+            type = 'word'
           } else {
-            type = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+            type = 'excel'
           }
-          downLoadObjectFile(row).then(({data}) => {
-            const blob = new Blob([data], { type: type });
-            // 创建URL来生成预览
-            const fileURL = URL.createObjectURL(blob);
-            // 在新标签页中打开文件预览
-            const newTab = window.open(fileURL, '_blank')
+          previewOssFileById2({ id: row.id, fileType: type }).then(({data}) => {
+            const blob = new Blob([data], { type: 'application/pdf;charset=UTF-8' })
+            const fileURL = URL.createObjectURL(blob)
+            window.open(fileURL, '_blank')
           })
         }
         else if (pdf.includes(row.fileType.toLowerCase())) {