diff --git a/urbanLifelineWeb/packages/shared/src/components/file/fileupload/FileUpload.vue b/urbanLifelineWeb/packages/shared/src/components/file/fileupload/FileUpload.vue
index 8ca9daf0..98cecf24 100644
--- a/urbanLifelineWeb/packages/shared/src/components/file/fileupload/FileUpload.vue
+++ b/urbanLifelineWeb/packages/shared/src/components/file/fileupload/FileUpload.vue
@@ -130,7 +130,7 @@
 					</div>
 
 					<div class="info">
-						<div class="name">{{ file.name || file.fileName || '未知文件' }}</div>
+						<div class="name">{{ file.name || '未知文件' }}</div>
 						<div class="size">{{ file.size ? formatFileSize(file.size) : '' }}</div>
 					</div>
 
@@ -148,7 +148,7 @@
 
 <script setup lang="ts">
 import { ref, computed } from 'vue'
-import { FILE_DOWNLOAD_URL } from '@/config'
+import { FILE_DOWNLOAD_URL, FILE_MAX_SIZE } from '@/config'
 import { fileAPI } from '@/api/file/file'
 import type { TbSysFileDTO } from '@/types/file/file'
 import { ElButton, ElDialog } from 'element-plus'
@@ -179,7 +179,7 @@ const props = withDefaults(defineProps<Props>(), {
 	coverImg: '',
 	fileList: () => [],
 	accept: '',
-	maxSize: 10 * 1024 * 1024,
+	maxSize: FILE_MAX_SIZE,
 	maxCount: 10,
 	title: '文件上传',
 	buttonText: '上传文件',
@@ -226,7 +226,7 @@ const currentFileList = computed(() => {
 // 判断已上传文件是否为图片
 const isUploadedImageFile = (file: InternalFile): boolean => {
 	if (file.localPreviewUrl) return true  // 有本地预览说明是图片
-	const mimeType = file.mimeType || file.extension || ''
+	const mimeType = file.mimeType ||  ''
 	return mimeType.includes('image') || /\.(jpg|jpeg|png|gif|webp|bmp)$/i.test(file.name || '')
 }
 
@@ -240,7 +240,7 @@ const getUploadedFileUrl = (file: InternalFile): string => {
 
 // 获取已上传文件的类型图标
 const getUploadedFileTypeIcon = (file: InternalFile): string => {
-	const ext = file.extension || file.name?.split('.').pop() || ''
+	const ext = file.type || file.name?.split('.').pop() || ''
 	const iconMap: Record<string, string> = {
 		pdf: '📄',
 		doc: '📝',
diff --git a/urbanLifelineWeb/packages/shared/src/config/index.ts b/urbanLifelineWeb/packages/shared/src/config/index.ts
index 99634995..26e74a49 100644
--- a/urbanLifelineWeb/packages/shared/src/config/index.ts
+++ b/urbanLifelineWeb/packages/shared/src/config/index.ts
@@ -205,6 +205,9 @@ export const FILE_DOWNLOAD_URL = config.file.downloadUrl;
 export const PUBLIC_IMG_PATH = config.publicImgPath;
 export const PUBLIC_WEB_PATH = config.publicWebPath;
 
+// 文件上传大小限制（100MB）
+export const FILE_MAX_SIZE = 100 * 1024 * 1024;
+
 // 导出完整配置对象
 export const APP_CONFIG = {
   // 应用标题
diff --git a/urbanLifelineWeb/packages/workcase/src/components/workcase/WorkcaseAssign.vue b/urbanLifelineWeb/packages/workcase/src/components/workcase/WorkcaseAssign.vue
index 14be9563..b66cc698 100644
--- a/urbanLifelineWeb/packages/workcase/src/components/workcase/WorkcaseAssign.vue
+++ b/urbanLifelineWeb/packages/workcase/src/components/workcase/WorkcaseAssign.vue
@@ -19,7 +19,7 @@
                         v-for="engineer in availableEngineers" 
                         :key="engineer.userId" 
                         :label="`${engineer.username} (${engineer.statusName || '未知状态'})`" 
-                        :value="engineer.userId"
+                        :value="engineer.userId!"
                     >
                         <div style="display: flex; justify-content: space-between; align-items: center;">
                             <span>{{ engineer.username }}</span>
@@ -46,7 +46,7 @@
                     ref="fileUploadRef"
                     mode="content"
                     :max-count="5"
-                    :max-size="10 * 1024 * 1024"
+                    :max-size="FILE_MAX_SIZE"
                     accept="image/*,.pdf,.doc,.docx,.xls,.xlsx"
                     :auto-upload="false"
                     :custom-upload="handleFilesUpload"
@@ -65,12 +65,13 @@
 import { ref, computed, watch } from 'vue'
 import { ElDialog, ElButton, ElInput, ElSelect, ElOption, ElMessage } from 'element-plus'
 import { FileUpload } from 'shared/components'
-import { fileAPI } from 'shared/api'
+import { fileAPI } from 'shared/api/file'
 import { workcaseAPI } from '@/api/workcase'
 import { workcaseChatAPI } from '@/api/workcase/workcaseChat'
 import type { TbWorkcaseProcessDTO } from '@/types/workcase/workcase'
 import type { CustomerServiceVO } from '@/types/workcase/customer'
 import type { TbSysFileDTO } from 'shared/types'
+import { FILE_MAX_SIZE } from '@/config'
 
 interface Props {
     /** 是否显示弹窗 */
diff --git a/urbanLifelineWeb/packages/workcase/src/config/index.ts b/urbanLifelineWeb/packages/workcase/src/config/index.ts
index 8d5eab0d..dfd9f344 100644
--- a/urbanLifelineWeb/packages/workcase/src/config/index.ts
+++ b/urbanLifelineWeb/packages/workcase/src/config/index.ts
@@ -216,6 +216,9 @@ export const FILE_UPLOAD_URL = config.file.uploadUrl;
 export const PUBLIC_IMG_PATH = config.publicImgPath;
 export const PUBLIC_WEB_PATH = config.publicWebPath;
 
+// 文件上传大小限制（100MB）
+export const FILE_MAX_SIZE = 100 * 1024 * 1024;
+
 // 导出完整配置对象
 export const APP_CONFIG = {
   // 应用标题
diff --git a/urbanLifelineWeb/packages/workcase/src/views/admin/knowledge/KnowLedgeView.vue b/urbanLifelineWeb/packages/workcase/src/views/admin/knowledge/KnowLedgeView.vue
index 0e42e839..be45d5d1 100644
--- a/urbanLifelineWeb/packages/workcase/src/views/admin/knowledge/KnowLedgeView.vue
+++ b/urbanLifelineWeb/packages/workcase/src/views/admin/knowledge/KnowLedgeView.vue
@@ -8,7 +8,7 @@
                 :title="'上传文档到：' + currentKnowledgeName"
                 button-text="上传文档"
                 accept=".pdf,.doc,.docx,.txt,.md"
-                :max-size="50 * 1024 * 1024"
+                :max-size="FILE_MAX_SIZE"
                 :max-count="10"
                 :custom-upload="customKnowledgeUpload"
                 @upload-error="handleUploadError"
@@ -110,7 +110,7 @@ import { ElMessage, ElMessageBox } from 'element-plus'
 import { aiKnowledgeAPI } from 'shared/api/ai'
 import { FileUpload, FileHistory } from 'shared/components'
 import DocumentSegment from 'shared/components/ai/knowledge/DocumentSegment.vue'
-import { FILE_DOWNLOAD_URL } from '@/config/index'
+import { FILE_DOWNLOAD_URL, FILE_MAX_SIZE } from '@/config/index'
 import type { TbKnowledge } from 'shared/types'
 
 // Tab 配置
diff --git a/urbanLifelineWeb/packages/workcase/src/views/public/AIChat/AIChatView.vue b/urbanLifelineWeb/packages/workcase/src/views/public/AIChat/AIChatView.vue
index fb77749e..459eefe9 100644
--- a/urbanLifelineWeb/packages/workcase/src/views/public/AIChat/AIChatView.vue
+++ b/urbanLifelineWeb/packages/workcase/src/views/public/AIChat/AIChatView.vue
@@ -280,7 +280,7 @@ import type {
     DifyFileInfo,
     TbSysFileDTO
 } from 'shared/types'
-import { AGENT_ID, FILE_DOWNLOAD_URL } from '@/config'
+import { AGENT_ID, FILE_DOWNLOAD_URL, FILE_MAX_SIZE } from '@/config'
 
 // 用户信息（TODO: 从实际用户store获取）
 const userId = computed(()=>{
@@ -737,10 +737,9 @@ const uploadFile = async (file: File) => {
         return
     }
     
-    // 文件大小限制 10MB
-    const maxSize = 10 * 1024 * 1024
-    if (file.size > maxSize) {
-        console.error('文件大小超过10MB限制')
+    // 文件大小限制
+    if (file.size > FILE_MAX_SIZE) {
+        console.error(`文件大小超过${FILE_MAX_SIZE / 1024 / 1024}MB限制`)
         return
     }
     
@@ -782,7 +781,7 @@ const loadMessagesFilesInfo = async (messageList: TbChatMessage[]) => {
     messageList.forEach(msg => {
         if (msg.files) {
             const filesArray = Array.isArray(msg.files) ? msg.files : [msg.files]
-            filesArray.forEach(id => {
+            filesArray.forEach((id: string) => {
                 if (id && !fileInfoCache.value.has(id)) {
                     fileIds.push(id)
                 }
diff --git a/urbanLifelineWeb/packages/workcase/src/views/public/workcase/WorkcaseDetail/WorkcaseDetail.vue b/urbanLifelineWeb/packages/workcase/src/views/public/workcase/WorkcaseDetail/WorkcaseDetail.vue
index 292cd376..bc946d49 100644
--- a/urbanLifelineWeb/packages/workcase/src/views/public/workcase/WorkcaseDetail/WorkcaseDetail.vue
+++ b/urbanLifelineWeb/packages/workcase/src/views/public/workcase/WorkcaseDetail/WorkcaseDetail.vue
@@ -256,7 +256,7 @@
                         ref="processFileUploadRef"
                         mode="content"
                         :max-count="5"
-                        :max-size="10 * 1024 * 1024"
+                        :max-size="FILE_MAX_SIZE"
                         accept="image/*,.pdf,.doc,.docx,.xls,.xlsx"
                         v-model:file-list="processUploadedFiles"
                         @upload-success="handleProcessUploadSuccess"
@@ -292,7 +292,7 @@ import { workcaseAPI } from '@/api/workcase'
 import { fileAPI } from 'shared/api/file'
 import { FileUpload } from 'shared/components'
 import { WorkcaseAssign } from '@/components'
-import { FILE_DOWNLOAD_URL } from '@/config'
+import { FILE_DOWNLOAD_URL, FILE_MAX_SIZE } from '@/config'
 
 interface Props {
     mode?: 'view' | 'edit' | 'create'