diff --git a/backend/init/migration/migrations/init.go b/backend/init/migration/migrations/init.go
index 3af26a063..ca2f469b8 100644
--- a/backend/init/migration/migrations/init.go
+++ b/backend/init/migration/migrations/init.go
@@ -85,7 +85,7 @@ var AddTableSetting = &gormigrate.Migration{
 		if err := tx.Create(&model.Setting{Key: "Language", Value: "zh"}).Error; err != nil {
 			return err
 		}
-		if err := tx.Create(&model.Setting{Key: "Theme", Value: "light"}).Error; err != nil {
+		if err := tx.Create(&model.Setting{Key: "Theme", Value: "auto"}).Error; err != nil {
 			return err
 		}
 
diff --git a/frontend/src/store/index.ts b/frontend/src/store/index.ts
index 423ae77ed..bd972be50 100644
--- a/frontend/src/store/index.ts
+++ b/frontend/src/store/index.ts
@@ -18,7 +18,7 @@ export const GlobalStore = defineStore({
         themeConfig: {
             panelName: '',
             primary: '#005EEB',
-            theme: 'bright',
+            theme: 'auto',
             footer: true,
         },
         isFullScreen: false,