diff --git a/packages/uni-app-plus/src/service/api/device/systemInfo.ts b/packages/uni-app-plus/src/service/api/device/systemInfo.ts
index 4b2f751cb015a39f35a15feffdd9cc4f253cd1b6..26ba2971a30c783bfecb352b6a9f2e93eb8510c4 100644
--- a/packages/uni-app-plus/src/service/api/device/systemInfo.ts
+++ b/packages/uni-app-plus/src/service/api/device/systemInfo.ts
@@ -18,7 +18,7 @@ export const getDeviceInfo = defineSyncApi<typeof uni.getDeviceInfo>(
   () => {
     weexGetSystemInfoSync()
     const {
-      deviceBrand,
+      deviceBrand = '',
       deviceModel,
       osName,
       osVersion,