diff --git a/entry/src/main/cpp/napi_init.cpp b/entry/src/main/cpp/napi_init.cpp
index 516f274e6e2ee85d81943822e560667ecb5d79e0..6ab1473c7e9187de567cdd89811da2d149edb503 100644
--- a/entry/src/main/cpp/napi_init.cpp
+++ b/entry/src/main/cpp/napi_init.cpp
@@ -21,6 +21,7 @@
 #define LOG_DOMAIN 0x3200
 #define LOG_TAG "MY_TAG"
 
+// [Start callback_context]
 napi_threadsafe_function tsFn;
 static int g_value = 0;
 
@@ -28,7 +29,9 @@ struct CallbackContext {
     napi_env env = nullptr;
     napi_ref callbackRef = nullptr;
 };
+// [End callback_context]
 
+// [Start sub_thread]
 void SubThread(CallbackContext *asyncContext) {
     if (asyncContext == nullptr) {
         return;
@@ -38,7 +41,9 @@ void SubThread(CallbackContext *asyncContext) {
     napi_call_threadsafe_function(tsFn, asyncContext, napi_tsfn_nonblocking);
     napi_release_threadsafe_function(tsFn, napi_tsfn_release);
 }
+// [End sub_thread]
 
+// [Start thread_safe_call_js]
 static void ThreadSafeCallJs(napi_env env, napi_value js_callBack, void *context, void *data) {
     CallbackContext *argContext = reinterpret_cast<CallbackContext *>(data);
     if (argContext != nullptr) {
@@ -66,7 +71,9 @@ static void ThreadSafeCallJs(napi_env env, napi_value js_callBack, void *context
     delete argContext;
     argContext = nullptr;
 }
+// [End thread_safe_call_js]
 
+// [Start thread_safe_case]
 static napi_value ThreadSafeCase(napi_env env, napi_callback_info info) {
     size_t argc = 1;
     napi_value js_callback;
@@ -92,11 +99,14 @@ static napi_value ThreadSafeCase(napi_env env, napi_callback_info info) {
     t.detach();
     return nullptr;
 }
+// [End thread_safe_case]
 
-
+// [Start uv_loop_async]
 uv_loop_t *loop = nullptr;
 uv_async_t *async = nullptr;
+// [End uv_loop_async_t]
 
+// [Start async_handler]
 void async_handler(uv_async_t *handle) {
     CallbackContext *context = reinterpret_cast<CallbackContext *>(handle->data);
     napi_handle_scope scope = nullptr;
@@ -125,7 +135,9 @@ void async_handler(uv_async_t *handle) {
     context = nullptr;
     uv_close((uv_handle_t *)async, [](uv_handle_t *handle) { delete (uv_async_t *)handle; });
 }
+// [End async_handler]
 
+// [Start callback_uv_work_test]
 void CallbackUvWorkTest(CallbackContext *context) {
     if (context == nullptr) {
         return;
@@ -135,8 +147,10 @@ void CallbackUvWorkTest(CallbackContext *context) {
     async->data = reinterpret_cast<void *>(context);
     uv_async_send(async);
 }
+// [End callback_uv_work_test]
 
 static napi_value LibUvCase(napi_env env, napi_callback_info info) {
+    // [Start lib_uv_case]
     size_t argc = 1;
     napi_value callback_function;
     napi_get_cb_info(env, info, &argc, &callback_function, nullptr, nullptr);
@@ -147,20 +161,25 @@ static napi_value LibUvCase(napi_env env, napi_callback_info info) {
         return nullptr;
     }
 
+    // [Start uv_default_loop]
     loop = uv_default_loop();
     async = new uv_async_t;
     uv_async_init(loop, async, async_handler);
 
+    // [StartExclude uv_default_loop]
     auto asyncContext = new CallbackContext();
     if (asyncContext == nullptr) {
         return nullptr;
     }
     asyncContext->env = env;
     napi_create_reference(env, callback_function, 1, &asyncContext->callbackRef);
+    // [End lib_uv_case]
+    // [EndExclude uv_default_loop]
     std::thread caseThread(CallbackUvWorkTest, asyncContext);
     caseThread.detach();
     uv_run(loop, UV_RUN_DEFAULT);
     return nullptr;
+    // [End uv_default_loop]
 }
 
 EXTERN_C_START
diff --git a/entry/src/main/ets/pages/Index.ets b/entry/src/main/ets/pages/Index.ets
index d21cad00b1012cc5dcb02efeb089b3b538390dbd..c49046989fe497c078a8c9cf47a91420261bbde9 100644
--- a/entry/src/main/ets/pages/Index.ets
+++ b/entry/src/main/ets/pages/Index.ets
@@ -18,6 +18,7 @@ import { promptAction } from '@kit.ArkUI'
 @Entry
 @Component
 struct Index {
+  // [Start work_function]
   @State value: number = 0;
   @State message: ResourceStr = $r('app.string.result_description');
   work: Function = (param: number) => {
@@ -25,6 +26,7 @@ struct Index {
     this.value = param;
     return param;
   }
+  // [End work_function]
 
   build() {
     Row() {
@@ -60,7 +62,9 @@ struct Index {
         Button($r('app.string.threadSafe_Case'))
           .width('100%')
           .onClick(() => {
+            // [Start testNapi_thread_safe_case]
             testNapi.threadSafeCase(this.work);
+            // [End testNapi_thread_safe_case]
             promptAction.showToast({
               message: $r('app.string.threadSafe_message'),
               duration: 2000