diff --git a/cocos/platform/win32/CCFileUtils-win32.cpp b/cocos/platform/win32/CCFileUtils-win32.cpp
index 93152f114c..74155a1b20 100644
--- a/cocos/platform/win32/CCFileUtils-win32.cpp
+++ b/cocos/platform/win32/CCFileUtils-win32.cpp
@@ -231,11 +231,11 @@ void FileUtilsWin32::listFilesRecursively(const std::string& dirPath, std::vecto
                     // Error getting file
                     break;
                 }
-                std::string fileName = StringWideCharToChar(file.name);
+                std::string fileName = StringWideCharToMultiByte(file.name);
 
                 if (fileName != "." && fileName != "..")
                 {
-                    std::string filepath = StringWideCharToChar(file.path);
+                    std::string filepath = StringWideCharToMultiByte(file.path);
                     if (file.is_dir)
                     {
                         filepath.push_back('/');
@@ -289,7 +289,7 @@ std::vector<std::string> FileUtilsWin32::listFiles(const std::string& dirPath) c
                     break;
                 }
 
-                std::string filepath = StringWideCharToChar(file.path);
+                std::string filepath = StringWideCharToMultiByte(file.path);
                 if (file.is_dir)
                 {
                     filepath.push_back('/');
@@ -359,7 +359,7 @@ string FileUtilsWin32::getWritablePath() const
         retPath = retPath.substr(0, retPath.rfind(L"\\") + 1);
     }
 
-    return convertPathFormatToUnixStyle(StringWideCharToChar(retPath));
+    return convertPathFormatToUnixStyle(StringWideCharToMultiByte(retPath));
 }
 
 bool FileUtilsWin32::renameFile(const std::string &oldfullpath, const std::string& newfullpath) const
@@ -444,7 +444,7 @@ bool FileUtilsWin32::createDirectory(const std::string& dirPath) const
         {
             subpath += dirs[i];
 
-            std::string utf8Path = StringWideCharToChar(subpath);
+            std::string utf8Path = StringWideCharToMultiByte(subpath);
             if (!isDirectoryExist(utf8Path))
             {
                 BOOL ret = CreateDirectory(subpath.c_str(), NULL);
@@ -500,7 +500,7 @@ bool FileUtilsWin32::removeDirectory(const std::string& dirPath) const
                 if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
                 {
                     temp += '/';
-                    ret = ret && this->removeDirectory(StringWideCharToChar(temp));
+                    ret = ret && this->removeDirectory(StringWideCharToMultiByte(temp));
                 }
                 else
                 {
diff --git a/cocos/platform/win32/CCUtils-win32.cpp b/cocos/platform/win32/CCUtils-win32.cpp
index 75e6e942df..1e3d6c01cf 100644
--- a/cocos/platform/win32/CCUtils-win32.cpp
+++ b/cocos/platform/win32/CCUtils-win32.cpp
@@ -55,31 +55,6 @@ std::wstring StringUtf8ToWideChar(const std::string& strUtf8)
     return ret;
 }
 
-std::string StringWideCharToUtf8(const std::wstring& strWideChar)
-{
-    std::string ret;
-    if (!strWideChar.empty())
-    {
-        int nNum = WideCharToMultiByte(CP_UTF8, 0, strWideChar.c_str(), -1, nullptr, 0, nullptr, FALSE);
-        if (nNum)
-        {
-            char* utf8String = new char[nNum + 1];
-            utf8String[0] = 0;
-
-            nNum = WideCharToMultiByte(CP_UTF8, 0, strWideChar.c_str(), -1, utf8String, nNum + 1, nullptr, FALSE);
-
-            ret = utf8String;
-            delete[] utf8String;
-        }
-        else
-        {
-            CCLOG("Wrong convert to Utf8 code:0x%x", GetLastError());
-        }
-    }
-
-    return ret;
-}
-
 std::string StringWideCharToMultiByte(const std::wstring& strWideChar, unsigned int cp)
 {
     int cchMultiByte = WideCharToMultiByte(cp, 0, strWideChar.c_str(), static_cast<int>(strWideChar.length()), NULL, 0, NULL, NULL);
diff --git a/cocos/platform/win32/CCUtils-win32.h b/cocos/platform/win32/CCUtils-win32.h
index b53167e061..1e6da505e0 100644
--- a/cocos/platform/win32/CCUtils-win32.h
+++ b/cocos/platform/win32/CCUtils-win32.h
@@ -32,8 +32,7 @@ THE SOFTWARE.
 NS_CC_BEGIN
 
 std::wstring CC_DLL StringUtf8ToWideChar(const std::string& strUtf8);
-std::string CC_DLL StringWideCharToUtf8(const std::wstring& strWideChar);
-std::string CC_DLL StringWideCharToChar(const std::wstring& strWideChar, unsigned int cp = CP_ACP);
+std::string CC_DLL StringWideCharToMultiByte(const std::wstring& strWideChar, unsigned int cp = CP_ACP);
 std::string CC_DLL UTF8StringToMultiByte(const std::string& strUtf8);
 
 NS_CC_END