diff --git a/lib/main/lockDetail/lockSet/thirdPartyPlatform/third_party_platform_state.dart b/lib/main/lockDetail/lockSet/thirdPartyPlatform/third_party_platform_state.dart
index 9bff0027..f061e6e7 100644
--- a/lib/main/lockDetail/lockSet/thirdPartyPlatform/third_party_platform_state.dart
+++ b/lib/main/lockDetail/lockSet/thirdPartyPlatform/third_party_platform_state.dart
@@ -25,7 +25,7 @@ class ThirdPartyPlatformState {
   // 响应式字符串集合（自动触发 UI 更新）
   final RxList<TppSupportInfo> tppSupportList = RxList<TppSupportInfo>([]);
 
-  RxInt selectPlatFormIndex = (-1).obs;
+  RxInt selectPlatFormIndex = (0).obs;
   RxBool openNumber = false.obs;
   RxString registerKey = ''.obs;