diff --git a/util/js_textdecoder.cpp b/util/js_textdecoder.cpp
index 05e574f..c98f368 100755
--- a/util/js_textdecoder.cpp
+++ b/util/js_textdecoder.cpp
@@ -73,7 +73,7 @@ namespace OHOS::Util {
         NAPI_CALL(env_, napi_get_typedarray_info(env_, src, &type, &length, &data1, &arrayBuffer, &byteOffset));
         const char *source = static_cast<char*>(data1);
         UErrorCode codeFlag = U_ZERO_ERROR;
-        size_t limit = GetMinByteSize() * length;
+        int32_t limit = GetMinByteSize() * length;
         size_t len = limit * sizeof(UChar);
         UChar *arr = nullptr;
         if (limit > 0) {
@@ -146,12 +146,12 @@ namespace OHOS::Util {
         return result;
     }
 
-    size_t TextDecoder::GetMinByteSize() const
+    int32_t TextDecoder::GetMinByteSize() const
     {
         if (tranTool_ == nullptr) {
             return -1;
         }
-        size_t res = ucnv_getMinCharSize(tranTool_.get());
+        int32_t res = ucnv_getMinCharSize(tranTool_.get());
         return res;
     }
 
diff --git a/util/js_textdecoder.h b/util/js_textdecoder.h
index bc74fda..4214469 100755
--- a/util/js_textdecoder.h
+++ b/util/js_textdecoder.h
@@ -26,7 +26,7 @@
 using TransformToolPointer = std::unique_ptr<UConverter, void(*)(UConverter*)>;
 namespace OHOS::Util {
     struct DecodeArr {
-        DecodeArr(UChar *tarPos, size_t tarStaPos, size_t limLen)
+        DecodeArr(UChar *tarPos, size_t tarStaPos, int32_t limLen)
         {
             this->target = tarPos;
             this->tarStartPos = tarStaPos;
@@ -34,7 +34,7 @@ namespace OHOS::Util {
         }
         UChar *target = 0;
         size_t tarStartPos = 0;
-        size_t limitLen = 0;
+        int32_t limitLen = 0;
     };
 
     class TextDecoder {
@@ -53,7 +53,7 @@ namespace OHOS::Util {
         napi_value GetEncoding() const;
         napi_value GetFatal() const;
         napi_value GetIgnoreBOM() const;
-        size_t GetMinByteSize() const;
+        int32_t GetMinByteSize() const;
         void Reset() const;
         UConverter *GetConverterPtr() const
         {
diff --git a/util/js_textencoder.cpp b/util/js_textencoder.cpp
index 2acd9bd..45bb434 100755
--- a/util/js_textencoder.cpp
+++ b/util/js_textencoder.cpp
@@ -72,7 +72,7 @@ namespace OHOS::Util {
         char *writeResult = static_cast<char*>(resultData) + byteOffset;
 
         int32_t nchars = 0;
-        int32_t written = 0;
+        uint32_t written = 0;
         NativeEngine *engine = reinterpret_cast<NativeEngine*>(env_);
         NativeValue *nativeValue = reinterpret_cast<NativeValue*>(src);
         engine->EncodeToUtf8(nativeValue, writeResult, &written, length, &nchars);
diff --git a/util/native_module_util.cpp b/util/native_module_util.cpp
index d932b28..22ceda4 100755
--- a/util/native_module_util.cpp
+++ b/util/native_module_util.cpp
@@ -191,8 +191,8 @@ namespace OHOS::Util {
         size_t argc = 1;
         napi_value argv = nullptr;
         NAPI_CALL(env, napi_get_cb_info(env, info, &argc, &argv, &thisVar, nullptr));
-        uint32_t err = 0;
-        NAPI_CALL(env, napi_get_value_uint32(env, argv, &err));
+        int32_t err = 0;
+        NAPI_CALL(env, napi_get_value_int32(env, argv, &err));
         errInfo = strerror(err);
         NAPI_CALL(env, napi_create_string_utf8(env, errInfo.c_str(), errInfo.size(), &result));
         return result;