diff --git a/apps/web-tdesign/src/preferences.ts b/apps/web-tdesign/src/preferences.ts
index b2e9ace4..eb1608bd 100644
--- a/apps/web-tdesign/src/preferences.ts
+++ b/apps/web-tdesign/src/preferences.ts
@@ -10,4 +10,7 @@ export const overridesPreferences = defineOverridesPreferences({
   app: {
     name: import.meta.env.VITE_APP_TITLE,
   },
+  theme: {
+    mode: "light"
+  }
 });