diff --git a/backend/src/main/resources/application-dev.yml b/backend/src/main/resources/application-dev.yml
index c7ec3ec..6cc9034 100644
--- a/backend/src/main/resources/application-dev.yml
+++ b/backend/src/main/resources/application-dev.yml
@@ -54,6 +54,11 @@ server:
       charset: UTF-8
       enabled: true
       force: true
+  # Tomcat 配置（支持大文件上传）
+  tomcat:
+    max-http-form-post-size: 524288000  # 500MB
+    max-swallow-size: 524288000  # 500MB
+    connection-timeout: 600000  # 10分钟超时
 
 # 日志配置
 logging:
diff --git a/backend/src/main/resources/application-prod.yml b/backend/src/main/resources/application-prod.yml
index 281e721..0d51cdc 100644
--- a/backend/src/main/resources/application-prod.yml
+++ b/backend/src/main/resources/application-prod.yml
@@ -55,6 +55,11 @@ server:
       charset: UTF-8
       enabled: true
       force: true
+  # Tomcat 配置（支持大文件上传）
+  tomcat:
+    max-http-form-post-size: 524288000  # 500MB
+    max-swallow-size: 524288000  # 500MB
+    connection-timeout: 600000  # 10分钟超时
   # 生产环境压缩
   compression:
     enabled: true
diff --git a/frontend/src/views/CreateTask.vue b/frontend/src/views/CreateTask.vue
index 41121c5..7f1a3c5 100644
--- a/frontend/src/views/CreateTask.vue
+++ b/frontend/src/views/CreateTask.vue
@@ -432,7 +432,7 @@
                   <span class="tip-icon">
                     <Icon name="document" size="sm" color="#31f08b" />
                   </span>
-                  <span>支持格式：Excel (.xlsx/.xls)、Word (.docx/.doc)、PDF、ZIP，单文件最大50MB，最多上传5个文件</span>
+                  <span>支持格式：Excel (.xlsx/.xls)、Word (.docx/.doc)、PDF、ZIP，单文件最大500MB，最多上传5个文件</span>
                 </div>
                 <div v-if="uploadProgress > 0 && uploadProgress < 100" class="upload-progress">
                   <a-progress :percent="uploadProgress" :show-info="true" />