diff --git a/src/components/AiUploader.vue b/src/components/AiUploader.vue
index b218f61f..98017f6e 100644
--- a/src/components/AiUploader.vue
+++ b/src/components/AiUploader.vue
@@ -53,7 +53,7 @@ export default {
     def: {default: () => []},
     action: {default: '/app/wxcp/upload/uploadFile'},
     preview: Boolean,
-    size: {default: 0},
+    size: {default: 10 * 1024 * 1024},
     disabled: Boolean
   },
   computed: {