diff --git a/src/compression_parser.cpp b/src/compression_parser.cpp
index 26504a4509e0b299cfad4e7ec692bd31c8a17750..4b11b01a456c2beea33d3cdd03ffea1db84947aa 100644
--- a/src/compression_parser.cpp
+++ b/src/compression_parser.cpp
@@ -560,14 +560,10 @@ bool CompressionParser::CheckAndTranscode(const string &src, string &dst, string
 
 bool CompressionParser::CopyForTrans(const string &src, const string &originDst, const string &dst)
 {
-    string srcSuffix;
-    string dstSuffix;
-    auto srcIndex = src.find_last_of(".");
-    auto dstIndex = dst.find_last_of(".");
-    if (srcIndex != string::npos && dstIndex != string::npos) {
-        srcSuffix = src.substr(srcIndex + 1);
-        dstSuffix = dst.substr(dstIndex + 1);
-    }
+    FileEntry srcFile(src);
+    FileEntry dstFile(dst);
+    string srcSuffix = srcFile.GetFilePath().GetExtension();
+    string dstSuffix = dstFile.GetFilePath().GetExtension();
     auto ret = false;
     if (srcSuffix == dstSuffix) {
         ret = ResourceUtil::CopyFileInner(src, dst);