diff --git a/file/src/file_impl_hal/file.c b/file/src/file_impl_hal/file.c
index 6bce29b29255a6f2e5c1c53f9d122adbc67228ee..cdd254efed1dc10d3afe1faf947ef5928f380434 100644
--- a/file/src/file_impl_hal/file.c
+++ b/file/src/file_impl_hal/file.c
@@ -73,11 +73,12 @@ int UtilsFileCopy(const char* src, const char* dest)
         return fpDest;
     }
     bool copyFailed = true;
+	int nLen;
     char* dataBuf = (char *)malloc(BUFFER_SIZE);
     if (dataBuf == NULL) {
         goto MALLOC_ERROR;
     }
-    int nLen = UtilsFileRead(fpSrc, dataBuf, BUFFER_SIZE);
+    nLen = UtilsFileRead(fpSrc, dataBuf, BUFFER_SIZE);
     while (nLen > 0) {
         if (UtilsFileWrite(fpDest, dataBuf, nLen) != nLen) {
             goto EXIT;
@@ -105,4 +106,4 @@ int UtilsFileMove(const char* src, const char* dest)
         ret = UtilsFileDelete(src);
     }
     return ret;
-}
\ No newline at end of file
+}
diff --git a/js/builtin/common/BUILD.gn b/js/builtin/common/BUILD.gn
index fb226b99e9f11643fd01529fdda60516e63ede6d..1c28449deaabf783896a539d6e809c5470b4a708 100644
--- a/js/builtin/common/BUILD.gn
+++ b/js/builtin/common/BUILD.gn
@@ -22,8 +22,6 @@ lite_library("ace_kit_common") {
     target_type = "shared_library"
   }
   sources = [ "src/nativeapi_common.cpp" ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
   include_dirs = [
     "include",
     "//foundation/arkui/ace_engine_lite/interfaces/inner_api/builtin",
diff --git a/js/builtin/deviceinfokit/BUILD.gn b/js/builtin/deviceinfokit/BUILD.gn
index 398a083b8dc1960e830ab968187796960ec53e6f..cf19e1cfacf697cf73ceb79c216fe2303a7a9ed3 100644
--- a/js/builtin/deviceinfokit/BUILD.gn
+++ b/js/builtin/deviceinfokit/BUILD.gn
@@ -22,8 +22,6 @@ lite_library("ace_kit_deviceinfo") {
     target_type = "shared_library"
   }
   sources = [ "src/nativeapi_deviceinfo.cpp" ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 
   include_dirs = [
     "include",
diff --git a/js/builtin/deviceinfokit/src/nativeapi_deviceinfo.cpp b/js/builtin/deviceinfokit/src/nativeapi_deviceinfo.cpp
index d25453b7145201d40760008123830e5944048e42..937b028a223058f5436b151ed7479fafa06f4f84 100644
--- a/js/builtin/deviceinfokit/src/nativeapi_deviceinfo.cpp
+++ b/js/builtin/deviceinfokit/src/nativeapi_deviceinfo.cpp
@@ -130,12 +130,12 @@ bool NativeapiDeviceInfo::GetProductInfo(JSIValue result)
     }
 
     Screen &screen = Screen::GetInstance();
-    JSI::SetNumberProperty(result, "windowWidth", (double)screen.GetWidth());
-    JSI::SetNumberProperty(result, "windowHeight", (double)screen.GetHeight());
+    JSI::SetNumberProperty(result, "windowWidth", static_cast<double>(screen.GetWidth()));
+    JSI::SetNumberProperty(result, "windowHeight", static_cast<double>(screen.GetHeight()));
     // set default value
     const uint8_t defaultScreenDensity = 195;
     const char * const defaultScreenShape = "rect";
-    JSI::SetNumberProperty(result, "screenDensity", (double)defaultScreenDensity);
+    JSI::SetNumberProperty(result, "screenDensity", static_cast<double>defaultScreenDensity));
     JSI::SetStringProperty(result, "screenShape", defaultScreenShape);
     return isSuccess;
 }
diff --git a/js/builtin/filekit/BUILD.gn b/js/builtin/filekit/BUILD.gn
index 3aacd05d814105e1ed7b9f2f721d655db486b390..32e40d2ebb27b2827c6477a174e8b935bb6e8559 100644
--- a/js/builtin/filekit/BUILD.gn
+++ b/js/builtin/filekit/BUILD.gn
@@ -26,8 +26,6 @@ lite_library("ace_kit_file") {
     "src/nativeapi_fs.cpp",
     "src/nativeapi_fs_impl.c",
   ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 
   include_dirs = [
     "include",
diff --git a/js/builtin/filekit/src/nativeapi_fs.cpp b/js/builtin/filekit/src/nativeapi_fs.cpp
index 06d5fe1438f16f9d25da60cb2308ffbbf3503ffb..246cdfd63d5f6038b1cc5d73a71b54bf44815743 100644
--- a/js/builtin/filekit/src/nativeapi_fs.cpp
+++ b/js/builtin/filekit/src/nativeapi_fs.cpp
@@ -352,7 +352,7 @@ void ExecuteReadTextFile(void* data)
     double position = JSI::GetNumberProperty(args, FILE_POSITION);
     double length = JSI::GetNumberProperty(args, FILE_LENGTH);
     JSIValue result = JSI::CreateObject();
-    int ret = ReadTextInner(src, position, length, result);
+    int ret = ReadTextInner(src, static_cast<int>(position), static_cast<int>(length), result);
     JSI::ReleaseString(src);
     if (ret == NATIVE_SUCCESS) {
         NativeapiCommon::SuccessCallBack(thisVal, args, result);
diff --git a/js/builtin/kvstorekit/BUILD.gn b/js/builtin/kvstorekit/BUILD.gn
index d4c009f86c103c4145b90c35b54650ee7e250301..ce462bc9f9faeb5dc0ef04c8adc0787495e6f29b 100644
--- a/js/builtin/kvstorekit/BUILD.gn
+++ b/js/builtin/kvstorekit/BUILD.gn
@@ -26,8 +26,6 @@ lite_library("ace_kit_kvstore") {
     "src/nativeapi_kv.cpp",
     "src/nativeapi_kv_impl.c",
   ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 
   include_dirs = [
     "include",
diff --git a/js/builtin/simulator/BUILD.gn b/js/builtin/simulator/BUILD.gn
index fd04244867ede95d791fb70104dc05b898beb6ae..54324e9107bcd0b7e5380ba31fa29f5120182d60 100644
--- a/js/builtin/simulator/BUILD.gn
+++ b/js/builtin/simulator/BUILD.gn
@@ -23,8 +23,6 @@ ohos_static_library("ace_kit_common_simulator") {
     "//foundation/arkui/ace_engine_lite/interfaces/inner_api/builtin/base",
   ]
   sources = [ "//utils/native/lite/js/builtin/common/src/nativeapi_common.cpp" ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 }
 
 ohos_static_library("ace_kit_deviceinfo_simulator") {
@@ -38,8 +36,6 @@ ohos_static_library("ace_kit_deviceinfo_simulator") {
   sources = [
     "//utils/native/lite/js/builtin/deviceinfokit/src/nativeapi_deviceinfo.cpp",
   ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
   deps = [
     "//foundation/arkui/ace_engine_lite/frameworks/targets/simulator:ace_lite",
     "//foundation/graphic/ui/huawei_proprietary/tools/ide:graphic_lite",
diff --git a/kal/timer/BUILD.gn b/kal/timer/BUILD.gn
index 119ef4d36b35a597614de3a3896edf8d36ea7548..70342f56418dcb34e28ea91f5462964836a5b581 100644
--- a/kal/timer/BUILD.gn
+++ b/kal/timer/BUILD.gn
@@ -20,8 +20,6 @@ lite_library("kal_timer") {
     target_type = "shared_library"
   }
   sources = [ "src/kal.c" ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 
   include_dirs = [
     "include",
diff --git a/timer_task/BUILD.gn b/timer_task/BUILD.gn
index 33584a79457a2c590f57e3a0c37200ddd3df63eb..49dff8755c802427c425464bb990acfe5f7990c2 100644
--- a/timer_task/BUILD.gn
+++ b/timer_task/BUILD.gn
@@ -20,8 +20,6 @@ lite_library("ace_kit_timer") {
     target_type = "shared_library"
   }
   sources = [ "src/nativeapi_timer_task.c" ]
-  cflags = [ "-Wall" ]
-  cflags_cc = cflags
 
   include_dirs = [
     "include",