diff --git a/sdk/api/@ohos.util.ets b/sdk/api/@ohos.util.ets
index 1d78c433c544d469b061fe1a7a89242e69951d8f..299c51b8c0d942a203d5a283ee558154133b49da 100644
--- a/sdk/api/@ohos.util.ets
+++ b/sdk/api/@ohos.util.ets
@@ -989,7 +989,7 @@ export namespace util {
             if (!flag) {
                 throw new BusinessError(`Wrong encoding format, the current '${encoding}' format is not support.`);
             }
-            this.encoding_ = tempString;
+            this.encoding_ = encoding;
         }
 
         static create(encoding?: string): TextEncoder
diff --git a/sdk/native/api/ani_textencoder.cpp b/sdk/native/api/ani_textencoder.cpp
index 8381a0948accd5923e8921410cc1515e5f595896..0d56cdcfc5ffa9489017abf9371a55818b2d827f 100644
--- a/sdk/native/api/ani_textencoder.cpp
+++ b/sdk/native/api/ani_textencoder.cpp
@@ -204,7 +204,7 @@ std::optional<WriteEncodedDataResult> WriteEncodedData(
             return std::nullopt;
         }
         size_t resultSizeBytes = inputPrefix.length();
-        if (EOK != memcpy_s(dest, destSizeBytes, inputPrefix.data(), resultSizeBytes)) {
+        if (EOK != memcpy_s(dest, sizeof(inputPrefix), inputPrefix.data(), sizeof(inputPrefix))) {
             HILOG_ERROR("TextEncoder:: Failure during memcpy_s.");
             return std::nullopt;
         }