diff --git a/util/js_textdecoder.cpp b/util/js_textdecoder.cpp
index 2ef93df..d75fe3b 100755
--- a/util/js_textdecoder.cpp
+++ b/util/js_textdecoder.cpp
@@ -42,6 +42,11 @@ namespace OHOS::Util {
             }
         }
         label_ = i32Flag;
+        {
+            decodeLock_.lock();
+            SetHwIcuDirectory();
+            decodeLock_.unlock();
+        }
         bool fatal =
         (i32Flag & static_cast<uint32_t>(ConverterFlags::FATAL_FLG)) ==
         static_cast<uint32_t>(ConverterFlags::FATAL_FLG);
diff --git a/util/js_textdecoder.h b/util/js_textdecoder.h
index 8f1d0fc..19ba906 100755
--- a/util/js_textdecoder.h
+++ b/util/js_textdecoder.h
@@ -17,6 +17,7 @@
 #define UTIL_JS_TEXTDECODER_H_
 
 #include <memory.h>
+#include <mutex>
 #include <string>
 #include <vector>
 #include "napi/native_api.h"
@@ -163,6 +164,7 @@ namespace OHOS::Util {
         uint32_t label_;
         std::string encStr_;
         TransformToolPointer tranTool_;
+        std::mutex decodeLock_;
     };
 }
 #endif // UTIL_JS_TEXTDECODER_H_