diff --git a/uitest/core/window_operator.cpp b/uitest/core/window_operator.cpp
index f802e98..4b5a926 100644
--- a/uitest/core/window_operator.cpp
+++ b/uitest/core/window_operator.cpp
@@ -72,7 +72,7 @@ namespace OHOS::uitest {
 
     static bool IsOperational(const WindowAction action, const WindowMode mode, ApiReplyInfo &out, size_t &index)
     {
-        for (auto dex = 0; dex < sizeof(OPERATIONS) / sizeof(Operational); dex++) {
+        for (unsigned long dex = 0; dex < sizeof(OPERATIONS) / sizeof(Operational); dex++) {
             if (OPERATIONS[dex].action == action && OPERATIONS[dex].windowMode == mode) {
                 if (OPERATIONS[dex].support) {
                     index = OPERATIONS[dex].index;
diff --git a/uitest/napi/uitest_napi.cpp b/uitest/napi/uitest_napi.cpp
index f4dde49..2c99509 100644
--- a/uitest/napi/uitest_napi.cpp
+++ b/uitest/napi/uitest_napi.cpp
@@ -255,7 +255,7 @@ namespace OHOS::uitest {
         if (g_backendObjsAboutToDelete.size() >= BACKEND_OBJ_GC_BATCH) {
             auto gcCall = ApiCallInfo {.apiId_ = "BackendObjectsCleaner"};
             unique_lock<mutex> lock(g_gcQueueMutex);
-            for (auto count = 0; count < BACKEND_OBJ_GC_BATCH; count++) {
+            for (size_t count = 0; count < BACKEND_OBJ_GC_BATCH; count++) {
                 gcCall.paramList_.emplace_back(g_backendObjsAboutToDelete.front());
                 g_backendObjsAboutToDelete.pop();
             }