diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 12262f7a32862abf6211dd6a6f48b7610e68a486..f6ac4a75baed53ac9f3e3935ea9da8a31af4ce45 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -516,6 +516,8 @@ static int taosRandom()
 
 #endif // ifdef Windows
 
+static void prompt();
+static void prompt2();
 static int createDatabasesAndStables();
 static void createChildTables();
 static int queryDbExec(TAOS *taos, char *command, QUERY_TYPE type, bool quiet);
@@ -1031,10 +1033,8 @@ static void parse_args(int argc, char *argv[], SArguments *arguments) {
     printf("# Print debug info:                  %d\n", arguments->debug_print);
     printf("# Print verbose info:                %d\n", arguments->verbose_print);
     printf("###################################################################\n");
-    if (!arguments->answer_yes) {
-        printf("Press enter key to continue\n\n");
-        (void) getchar();
-    }
+
+    prompt();
   }
 }
 
@@ -3410,10 +3410,7 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
               g_args.interlace_rows, g_args.num_of_RPR);
       printf("        interlace rows value will be set to num_of_records_per_req %"PRIu64"\n\n",
               g_args.num_of_RPR);
-      if (!g_args.answer_yes) {
-        printf("        press Enter key to continue or Ctrl-C to stop.");
-        (void)getchar();
-      }
+      prompt2();
       g_args.interlace_rows = g_args.num_of_RPR;
     }
   } else if (!interlaceRows) {
@@ -3470,9 +3467,9 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
       g_args.answer_yes = false;
     }
   } else if (!answerPrompt) {
-    g_args.answer_yes = false;
+    g_args.answer_yes = true;   // default is no, mean answer_yes.
   } else {
-    printf("ERROR: failed to read json, confirm_parameter_prompt not found\n");
+    errorPrint("%s", "failed to read json, confirm_parameter_prompt input mistake\n");
     goto PARSE_OVER;
   }
 
@@ -5342,6 +5339,7 @@ static void* syncWriteProgressive(threadInfo *pThreadInfo) {
     int64_t start_time = pThreadInfo->start_time;
 
     int64_t insertRows = (superTblInfo)?superTblInfo->insertRows:g_args.num_of_DPT;
+
     verbosePrint("%s() LN%d insertRows=%"PRId64"\n", __func__, __LINE__, insertRows);
 
     for (uint64_t i = 0; i < insertRows;) {
@@ -6022,6 +6020,21 @@ static void *readMetric(void *sarg) {
   return NULL;
 }
 
+static void prompt()
+{
+  if (!g_args.answer_yes) {
+    printf("Press enter key to continue\n\n");
+    (void)getchar();
+  }
+}
+
+static void prompt2()
+{
+    if (!g_args.answer_yes) {
+        printf("        press Enter key to continue or Ctrl-C to stop.");
+        (void)getchar();
+    }
+}
 
 static int insertTestProcess() {
 
@@ -6042,10 +6055,7 @@ static int insertTestProcess() {
   if (g_fpOfInsertResult)
     printfInsertMetaToFile(g_fpOfInsertResult);
 
-  if (!g_args.answer_yes) {
-    printf("Press enter key to continue\n\n");
-    (void)getchar();
-  }
+  prompt();
 
   init_rand_data();
 
@@ -6317,10 +6327,7 @@ static int queryTestProcess() {
             &g_queryInfo.superQueryInfo.childTblCount);
   }
 
-  if (!g_args.answer_yes) {
-    printf("Press enter key to continue\n\n");
-    (void)getchar();
-  }
+  prompt();
 
   if (g_args.debug_print || g_args.verbose_print) {
     printfQuerySystemInfo(taos);
@@ -6673,10 +6680,7 @@ static int subscribeTestProcess() {
   printfQueryMeta();
   resetAfterAnsiEscape();
 
-  if (!g_args.answer_yes) {
-    printf("Press enter key to continue\n\n");
-    (void) getchar();
-  }
+  prompt();
 
   TAOS * taos = NULL;
   taos = taos_connect(g_queryInfo.host,
diff --git a/tests/pytest/tools/taosdemoTestWithJson.py b/tests/pytest/tools/taosdemoTestWithJson.py
index f57af9ce5c7ce890a0a93c6081702d93954af138..b2ecd5497620bf5a0f90dd2e8529890423fd82a1 100644
--- a/tests/pytest/tools/taosdemoTestWithJson.py
+++ b/tests/pytest/tools/taosdemoTestWithJson.py
@@ -23,32 +23,32 @@ class TDTestCase:
     def init(self, conn, logSql):
         tdLog.debug("start to execute %s" % __file__)
         tdSql.init(conn.cursor(), logSql)
-        
+
     def getBuildPath(self):
         selfPath = os.path.dirname(os.path.realpath(__file__))
 
-        if ("community" in selfPath):
-            projPath = selfPath[:selfPath.find("community")]
+        if "community" in selfPath:
+            projPath = selfPath[: selfPath.find("community")]
         else:
-            projPath = selfPath[:selfPath.find("tests")]
+            projPath = selfPath[: selfPath.find("tests")]
 
         for root, dirs, files in os.walk(projPath):
-            if ("taosd" in files):
+            if "taosd" in files:
                 rootRealPath = os.path.dirname(os.path.realpath(root))
-                if ("packaging" not in rootRealPath):
-                    buildPath = root[:len(root)-len("/build/bin")]
+                if "packaging" not in rootRealPath:
+                    buildPath = root[: len(root) - len("/build/bin")]
                     break
         return buildPath
-        
+
     def run(self):
         tdSql.prepare()
         buildPath = self.getBuildPath()
-        if (buildPath == ""):
+        if buildPath == "":
             tdLog.exit("taosd not found!")
         else:
             tdLog.info("taosd found in %s" % buildPath)
-        binPath = buildPath+ "/build/bin/"
-        os.system("yes | %staosdemo -f tools/insert.json" % binPath)
+        binPath = buildPath + "/build/bin/"
+        os.system("%staosdemo -f tools/insert.json -y" % binPath)
 
         tdSql.execute("use db01")
         tdSql.query("select count(*) from stb01")