diff --git a/services/loopevent/task/le_task.h b/services/loopevent/task/le_task.h
index 24bf371bc..98c5a94cb 100644
--- a/services/loopevent/task/le_task.h
+++ b/services/loopevent/task/le_task.h
@@ -111,7 +111,7 @@ typedef struct {
 
 typedef struct {
     BaseTask base;
-    int events;
+    uint32_t events;
     ProcessWatchEvent processEvent;
 } WatcherTask;
 
@@ -134,4 +134,4 @@ int CheckTaskFlags(const BaseTask *task, uint32_t flags);
 #endif
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/test/unittest/init/sandbox_unittest.cpp b/test/unittest/init/sandbox_unittest.cpp
index f129e5e84..9f31f9310 100644
--- a/test/unittest/init/sandbox_unittest.cpp
+++ b/test/unittest/init/sandbox_unittest.cpp
@@ -108,7 +108,7 @@ cJSON *MakeSandboxJson(const char *sandboxFileName, const int MODE)
 
     // assemble mount-bind-paths items
     // Append items to mount-bind-paths
-    for (int i = 0; i < (sizeof(APP_PATHS) / sizeof(char *)); i++) {
+    for (size_t i = 0; i < (sizeof(APP_PATHS) / sizeof(char *)); i++) {
         cJSON_AddItemToArray(mJsonMtBdPth, mJsonMtBdPth_Itm = cJSON_CreateObject());
         int MOUNT_FLAG_COUNT = 2;
         if (MODE != NULL_MOUNT_ITEM) {
diff --git a/ueventd/ueventd.c b/ueventd/ueventd.c
index 5ff066e5b..901975284 100644
--- a/ueventd/ueventd.c
+++ b/ueventd/ueventd.c
@@ -142,7 +142,7 @@ static const DYNAMIC_DEVICE_NODE dynamicDevices[] = {
 static void HandleRequiredDynamicDeviceNodes(const struct Uevent *uevent)
 {
     mode_t mask;
-    int idx = 0;
+    size_t idx = 0;
 
     if (uevent->deviceName == NULL) {
         return;