diff --git a/src/client/inc/tscParseLine.h b/src/client/inc/tscParseLine.h
index e36c0bbc0b2d9c02e798aed1fe1e68dbe02939f5..62040359963c3814326bcb7c7de0bce1e2891198 100644
--- a/src/client/inc/tscParseLine.h
+++ b/src/client/inc/tscParseLine.h
@@ -47,6 +47,12 @@ typedef enum {
   SML_TIME_STAMP_NANO_SECONDS
 } SMLTimeStampType;
 
+typedef enum {
+  SML_LINE_PROTOCOL = 0,
+  SML_TELNET_PROTOCOL = 1,
+  SML_JSON_PROTOCOL = 2,
+} SMLProtocolType;
+
 typedef struct {
   uint64_t id;
   SHashObj* smlDataToSchema;
@@ -66,6 +72,11 @@ int32_t convertSmlTimeStamp(TAOS_SML_KV *pVal, char *value,
 
 void destroySmlDataPoint(TAOS_SML_DATA_POINT* point);
 
+int taos_insert_sml_lines(TAOS* taos, char* lines[], int numLines);
+int taos_insert_telnet_lines(TAOS* taos, char* lines[], int numLines);
+int taos_insert_json_payload(TAOS* taos, char* payload);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/client/src/TSDBJNIConnector.c b/src/client/src/TSDBJNIConnector.c
index 925b7d75db9f88c9905270aa365c60990e9f45a3..945aff8f893665b6cf8c878d61e5ef4d8a9d26e2 100644
--- a/src/client/src/TSDBJNIConnector.c
+++ b/src/client/src/TSDBJNIConnector.c
@@ -1070,7 +1070,7 @@ JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_insertLinesImp(J
     c_lines[i] = (char *)(*env)->GetStringUTFChars(env, line, 0);
   }
 
-  int code = taos_insert_lines(taos, c_lines, numLines);
+  int code = taos_insert_lines(taos, c_lines, numLines, 0);
 
   for (int i = 0; i < numLines; ++i) {
     jstring line = (jstring)((*env)->GetObjectArrayElement(env, lines, i));
@@ -1084,4 +1084,4 @@ JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_insertLinesImp(J
     return JNI_TDENGINE_ERROR;
   }
   return code;
-}
\ No newline at end of file
+}
diff --git a/src/client/src/tscParseLineProtocol.c b/src/client/src/tscParseLineProtocol.c
index 22392ba306faeed05af5d695ca0090057ac211cf..9032e33667362c3ad234317fcb355a4693c55d8c 100644
--- a/src/client/src/tscParseLineProtocol.c
+++ b/src/client/src/tscParseLineProtocol.c
@@ -2127,7 +2127,7 @@ int32_t tscParseLines(char* lines[], int numLines, SArray* points, SArray* faile
   return TSDB_CODE_SUCCESS;
 }
 
-int taos_insert_lines(TAOS* taos, char* lines[], int numLines) {
+int taos_insert_sml_lines(TAOS* taos, char* lines[], int numLines) {
   int32_t code = 0;
 
   SSmlLinesInfo* info = tcalloc(1, sizeof(SSmlLinesInfo));
@@ -2184,3 +2184,22 @@ cleanup:
   return code;
 }
 
+int taos_insert_lines(TAOS* taos, char* lines[], int numLines, int protocol) {
+  int code;
+  switch (protocol) {
+    case SML_LINE_PROTOCOL:
+      code = taos_insert_sml_lines(taos, lines, numLines);
+      break;
+    case SML_TELNET_PROTOCOL:
+      code = taos_insert_telnet_lines(taos, lines, numLines);
+      break;
+    case SML_JSON_PROTOCOL:
+      code = taos_insert_json_payload(taos, *lines);
+      break;
+    default:
+      code = TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE;
+      break;
+  }
+
+  return code;
+}
diff --git a/src/connector/python/taos/cinterface.py b/src/connector/python/taos/cinterface.py
index c5737ea5a07b7678e058307dfe3b47546dd99909..81766bf56d6bb44e834632dd239037dc32ac5dea 100644
--- a/src/connector/python/taos/cinterface.py
+++ b/src/connector/python/taos/cinterface.py
@@ -817,13 +817,13 @@ except AttributeError:
 
 
 
-def taos_insert_lines(connection, lines):
+def taos_insert_lines(connection, lines, protocol):
     # type: (c_void_p, list[str] | tuple(str)) -> None
     num_of_lines = len(lines)
     lines = (c_char_p(line.encode("utf-8")) for line in lines)
     lines_type = ctypes.c_char_p * num_of_lines
     p_lines = lines_type(*lines)
-    errno = _libtaos.taos_insert_lines(connection, p_lines, num_of_lines)
+    errno = _libtaos.taos_insert_lines(connection, p_lines, num_of_lines, protocol)
     if errno != 0:
         raise LinesError("insert lines error", errno)
 
diff --git a/src/connector/python/taos/connection.py b/src/connector/python/taos/connection.py
index 35aca1fb26c1e612c3b3f6b1d8c794495bed0035..37fab4fc5fff3f7b74cd7053817de7d14339b73c 100644
--- a/src/connector/python/taos/connection.py
+++ b/src/connector/python/taos/connection.py
@@ -117,9 +117,10 @@ class TaosConnection(object):
         stream = taos_open_stream(self._conn, sql, callback, stime, param, callback2)
         return TaosStream(stream)
 
-    def insert_lines(self, lines):
+    def insert_lines(self, lines, protocol):
         # type: (list[str]) -> None
-        """Line protocol and schemaless support
+        """
+        1.Line protocol and schemaless support
 
         ## Example
 
@@ -134,28 +135,13 @@ class TaosConnection(object):
         conn.insert_lines(lines)
         ```
 
-        ## Exception
-
-        ```python
-        try:
-            conn.insert_lines(lines)
-        except SchemalessError as err:
-            print(err)
-        ```
-        """
-        return taos_insert_lines(self._conn, lines)
-
-    def insert_telnet_lines(self, lines):
-        """OpenTSDB telnet style API format support
+        2.OpenTSDB telnet style API format support
 
         ## Example
         cpu_load 1626056811855516532ns 2.0f32 id="tb1",host="host0",interface="eth0"
 
-        """
-        return taos_insert_telnet_lines(self._conn, lines)
 
-    def insert_json_payload(self, payload):
-        """OpenTSDB HTTP JSON format support
+        3.OpenTSDB HTTP JSON format support
 
         ## Example
         "{
@@ -170,8 +156,18 @@ class TaosConnection(object):
                 }
         }"
 
+        ## Exception
+
+        ```python
+        try:
+            conn.insert_lines(lines)
+        except SchemalessError as err:
+            print(err)
+        ```
+
         """
-        return taos_insert_json_payload(self._conn, payload)
+        return taos_insert_lines(self._conn, lines, protocol)
+
 
     def cursor(self):
         # type: () -> TaosCursor
diff --git a/src/inc/taos.h b/src/inc/taos.h
index be5123797069696ffad817c0db7bc2c8c03e9606..a4d686baca715f26a7b430286670c92a74fe17e4 100644
--- a/src/inc/taos.h
+++ b/src/inc/taos.h
@@ -187,11 +187,7 @@ DLL_EXPORT void taos_close_stream(TAOS_STREAM *tstr);
 
 DLL_EXPORT int taos_load_table_info(TAOS *taos, const char* tableNameList);
 
-DLL_EXPORT int taos_insert_lines(TAOS* taos, char* lines[], int numLines);
-
-DLL_EXPORT int taos_insert_telnet_lines(TAOS* taos, char* lines[], int numLines);
-
-DLL_EXPORT int taos_insert_json_payload(TAOS* taos, char* payload);
+DLL_EXPORT int taos_insert_lines(TAOS* taos, char* lines[], int numLines, int protocol);
 
 #ifdef __cplusplus
 }
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 887c51f10c5a6c10e213bb893725a837a0be77cd..6b62a123cac417031d27c5cf74a118f42d22150b 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -112,6 +112,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TSC_INVALID_JSON_TYPE         TAOS_DEF_ERROR_CODE(0, 0x0222)  //"Invalid JSON data type")
 #define TSDB_CODE_TSC_INVALID_JSON_CONFIG       TAOS_DEF_ERROR_CODE(0, 0x0223)  //"Invalid JSON configuration")
 #define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0224)  //"Value out of range")
+#define TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE     TAOS_DEF_ERROR_CODE(0, 0x0225)  //"Invalid line protocol type")
 
 // mnode
 #define TSDB_CODE_MND_MSG_NOT_PROCESSED         TAOS_DEF_ERROR_CODE(0, 0x0300)  //"Message not processed")
diff --git a/src/util/src/terror.c b/src/util/src/terror.c
index 404d4ad0c18944826abebf6d0e73c573dbe54756..cb482aa8f151eab794965e14a2280cde22bd0852 100644
--- a/src/util/src/terror.c
+++ b/src/util/src/terror.c
@@ -120,6 +120,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON,             "Invalid JSON format")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_TYPE,        "Invalid JSON data type")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_CONFIG,      "Invalid JSON configuration")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_VALUE_OUT_OF_RANGE,       "Value out of range")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE,    "Invalid line protocol type")
 
 // mnode
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MSG_NOT_PROCESSED,        "Message not processed")
diff --git a/tests/examples/c/apitest.c b/tests/examples/c/apitest.c
index 18569196993de2c424f8449db3461b6ff0471d0d..78edd7b34971e0660a4c87586883f0842762b663 100644
--- a/tests/examples/c/apitest.c
+++ b/tests/examples/c/apitest.c
@@ -980,40 +980,40 @@ int32_t verify_schema_less(TAOS* taos) {
       "stf,t1=4i64,t3=\"t4\",t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933641000000ns"
   };
 
-  code = taos_insert_lines(taos, lines , sizeof(lines)/sizeof(char*));
+  code = taos_insert_lines(taos, lines , sizeof(lines)/sizeof(char*), 0);
 
   char* lines2[] = {
       "stg,t1=3i64,t2=4f64,t3=\"t3\" c1=3i64,c3=L\"passit\",c2=false,c4=4f64 1626006833639000000ns",
       "stg,t1=4i64,t3=\"t4\",t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin\",c2=true,c4=5f64,c5=5f64 1626006833640000000ns"
   };
-  code = taos_insert_lines(taos, &lines2[0], 1);
-  code = taos_insert_lines(taos, &lines2[1], 1);
+  code = taos_insert_lines(taos, &lines2[0], 1, 0);
+  code = taos_insert_lines(taos, &lines2[1], 1, 0);
 
   char* lines3[] = {
       "sth,t1=4i64,t2=5f64,t4=5f64,ID=\"childtable\" c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933641ms",
       "sth,t1=4i64,t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933654ms"
   };
-  code = taos_insert_lines(taos, lines3, 2);
+  code = taos_insert_lines(taos, lines3, 2, 0);
 
   char* lines4[] = {
       "st123456,t1=3i64,t2=4f64,t3=\"t3\" c1=3i64,c3=L\"passit\",c2=false,c4=4f64 1626006833639000000ns",
       "dgtyqodr,t2=5f64,t3=L\"ste\" c1=tRue,c2=4i64,c3=\"iam\" 1626056811823316532ns"
   };
-  code = taos_insert_lines(taos, lines4, 2);
+  code = taos_insert_lines(taos, lines4, 2, 0);
 
   char* lines5[] = {
       "zqlbgs,id=\"zqlbgs_39302_21680\",t0=f,t1=127i8,t2=32767i16,t3=2147483647i32,t4=9223372036854775807i64,t5=11.12345f32,t6=22.123456789f64,t7=\"binaryTagValue\",t8=L\"ncharTagValue\" c0=f,c1=127i8,c2=32767i16,c3=2147483647i32,c4=9223372036854775807i64,c5=11.12345f32,c6=22.123456789f64,c7=\"binaryColValue\",c8=L\"ncharColValue\",c9=7u64 1626006833639000000ns",
       "zqlbgs,t9=f,id=\"zqlbgs_39302_21680\",t0=f,t1=127i8,t11=127i8,t2=32767i16,t3=2147483647i32,t4=9223372036854775807i64,t5=11.12345f32,t6=22.123456789f64,t7=\"binaryTagValue\",t8=L\"ncharTagValue\",t10=L\"ncharTagValue\" c10=f,c0=f,c1=127i8,c12=127i8,c2=32767i16,c3=2147483647i32,c4=9223372036854775807i64,c5=11.12345f32,c6=22.123456789f64,c7=\"binaryColValue\",c8=L\"ncharColValue\",c9=7u64,c11=L\"ncharColValue\" 1626006833639000000ns"
   };
-  code = taos_insert_lines(taos, &lines5[0], 1);
-  code = taos_insert_lines(taos, &lines5[1], 1);
+  code = taos_insert_lines(taos, &lines5[0], 1, 0);
+  code = taos_insert_lines(taos, &lines5[1], 1, 0);
 
 
   char* lines6[] = {
       "st123456,t1=3i64,t2=4f64,t3=\"t3\" c1=3i64,c3=L\"passit\",c2=false,c4=4f64 1626006833639000000ns",
       "dgtyqodr,t2=5f64,t3=L\"ste\" c1=tRue,c2=4i64,c3=\"iam\" 1626056811823316532ns"
   };
-  code = taos_insert_lines(taos, lines6, 2);
+  code = taos_insert_lines(taos, lines6, 2, 0);
   return (code);
 }
 
diff --git a/tests/examples/c/schemaless.c b/tests/examples/c/schemaless.c
index 1a551cc5f7bd600ccaf87701953f7109743e8302..bd4773c199bef1b764e503367441298baefe4df3 100644
--- a/tests/examples/c/schemaless.c
+++ b/tests/examples/c/schemaless.c
@@ -79,7 +79,7 @@ int main(int argc, char* argv[]) {
 
   printf("%s\n", "begin taos_insert_lines");
   int64_t  begin = getTimeInUs();
-  int32_t code = taos_insert_lines(taos, lines, numSuperTables * numChildTables * numRowsPerChildTable);
+  int32_t code = taos_insert_lines(taos, lines, numSuperTables * numChildTables * numRowsPerChildTable, 0);
   int64_t end = getTimeInUs();
   printf("code: %d, %s. time used: %"PRId64"\n", code, tstrerror(code), end-begin);
 
diff --git a/tests/pytest/insert/insertJSONPayload.py b/tests/pytest/insert/insertJSONPayload.py
index 6f45450c892637946be6f90453ecb047ee818092..64b9e6290043297926aaa5b263a4529c462d6520 100644
--- a/tests/pytest/insert/insertJSONPayload.py
+++ b/tests/pytest/insert/insertJSONPayload.py
@@ -33,7 +33,7 @@ class TDTestCase:
         ### Default format ###
         ### metric ###
         print("============= step0 : test metric  ================")
-        payload = '''
+        payload = ['''
         {
 	    "metric":	".stb.0.",
 	    "timestamp":	1626006833610123,
@@ -45,16 +45,16 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe _stb_0_")
         tdSql.checkRows(6)
 
         ### metric value ###
         print("============= step1 : test metric value types  ================")
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_0",
 	    "timestamp":	1626006833610123,
@@ -66,14 +66,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_0")
         tdSql.checkData(1, 1, "BIGINT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_1",
 	    "timestamp":	1626006833610123,
@@ -85,14 +85,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_1")
         tdSql.checkData(1, 1, "BOOL")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_2",
 	    "timestamp":	1626006833610123,
@@ -104,14 +104,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_2")
         tdSql.checkData(1, 1, "BOOL")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_3",
 	    "timestamp":	1626006833610123,
@@ -123,14 +123,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_3")
         tdSql.checkData(1, 1, "BINARY")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_4",
 	    "timestamp":	1626006833610123,
@@ -142,14 +142,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_4")
         tdSql.checkData(1, 1, "DOUBLE")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_5",
 	    "timestamp":	1626006833610123,
@@ -161,9 +161,9 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_5")
         tdSql.checkData(1, 1, "DOUBLE")
@@ -171,7 +171,7 @@ class TDTestCase:
 
         print("============= step2 : test timestamp  ================")
         ### timestamp 0 ###
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_6",
 	    "timestamp":	0,
@@ -183,14 +183,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
 
         print("============= step3 : test tags  ================")
         ### Default tag numeric types ###
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_8",
 	    "timestamp":	0,
@@ -199,14 +199,14 @@ class TDTestCase:
 		"t1":	123
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_8")
         tdSql.checkData(2, 1, "BIGINT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_9",
 	    "timestamp":	0,
@@ -215,14 +215,14 @@ class TDTestCase:
 		"t1":	123.00
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_9")
         tdSql.checkData(2, 1, "DOUBLE")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb0_10",
 	    "timestamp":	0,
@@ -231,9 +231,9 @@ class TDTestCase:
 		"t1":	123E-1
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb0_10")
         tdSql.checkData(2, 1, "DOUBLE")
@@ -242,7 +242,7 @@ class TDTestCase:
         print("============= step4 : test nested format  ================")
         ### timestamp ###
         #seconds
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb1_0",
 	    "timestamp":	{
@@ -257,15 +257,15 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select ts from stb1_0")
         tdSql.checkData(0, 0, "2021-07-11 20:33:53.000000")
 
         #milliseconds
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb1_1",
 	    "timestamp":	{
@@ -280,15 +280,15 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select ts from stb1_1")
         tdSql.checkData(0, 0, "2021-07-11 20:33:53.610000")
 
         #microseconds
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb1_2",
 	    "timestamp":	{
@@ -303,15 +303,15 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select ts from stb1_2")
         tdSql.checkData(0, 0, "2021-07-11 20:33:53.610123")
 
         #nanoseconds
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb1_3",
 	    "timestamp":	{
@@ -326,16 +326,16 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select ts from stb1_3")
         tdSql.checkData(0, 0, "2021-07-11 20:33:53.610123")
 
         #now
         tdSql.execute('use test')
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb1_4",
 	    "timestamp":	{
@@ -350,12 +350,12 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         ### metric value ###
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_0",
 	    "timestamp":	{
@@ -373,14 +373,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_0")
         tdSql.checkData(1, 1, "BOOL")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_1",
 	    "timestamp":	{
@@ -398,14 +398,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_1")
         tdSql.checkData(1, 1, "TINYINT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_2",
 	    "timestamp":	{
@@ -423,14 +423,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_2")
         tdSql.checkData(1, 1, "SMALLINT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_3",
 	    "timestamp":	{
@@ -448,14 +448,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_3")
         tdSql.checkData(1, 1, "INT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_4",
 	    "timestamp":	{
@@ -473,14 +473,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_4")
         tdSql.checkData(1, 1, "BIGINT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_5",
 	    "timestamp":	{
@@ -498,14 +498,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_5")
         tdSql.checkData(1, 1, "FLOAT")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_6",
 	    "timestamp":	{
@@ -523,14 +523,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_6")
         tdSql.checkData(1, 1, "DOUBLE")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_7",
 	    "timestamp":	{
@@ -548,14 +548,14 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_7")
         tdSql.checkData(1, 1, "BINARY")
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb2_8",
 	    "timestamp":	{
@@ -573,16 +573,16 @@ class TDTestCase:
 		"t4":	"123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>"
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb2_8")
         tdSql.checkData(1, 1, "NCHAR")
 
         ### tag value ###
 
-        payload = '''
+        payload = ['''
         {
 	    "metric":	"stb3_0",
 	    "timestamp":	{
@@ -632,9 +632,9 @@ class TDTestCase:
 		}
 	    }
         }
-        '''
-        code = self._conn.insert_json_payload(payload)
-        print("insert_json_payload result {}".format(code))
+        ''']
+        code = self._conn.insert_lines(payload, 2)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("describe stb3_0")
         tdSql.checkData(2, 1, "BOOL")
diff --git a/tests/pytest/insert/insertTelnetLines.py b/tests/pytest/insert/insertTelnetLines.py
index b47a74249bbad57ef758e886c513a7eea78b7634..cad8d940c91fcb44c06e113b04ffde1d712dd612 100644
--- a/tests/pytest/insert/insertTelnetLines.py
+++ b/tests/pytest/insert/insertTelnetLines.py
@@ -39,8 +39,8 @@ class TDTestCase:
                         ".stb0.3. 1626006833639000000ns 4i8 host=\"host0\" interface=\"eth0\"",
                    ]
 
-        code = self._conn.insert_telnet_lines(lines0)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines0, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("show stables")
         tdSql.checkRows(4)
@@ -68,8 +68,8 @@ class TDTestCase:
                       "stb1 0 6i8 host=\"host0\"",
                     ]
 
-        code = self._conn.insert_telnet_lines(lines1)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines1, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb1")
         tdSql.checkRows(6)
@@ -82,8 +82,8 @@ class TDTestCase:
                         "stb2_0 1626006833651ms -127i8 host=\"host0\"",
                         "stb2_0 1626006833652ms 127i8 host=\"host0\""
                      ]
-        code = self._conn.insert_telnet_lines(lines2_0)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_0, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_0")
         tdSql.checkRows(2)
@@ -97,8 +97,8 @@ class TDTestCase:
                         "stb2_1 1626006833651ms -32767i16 host=\"host0\"",
                         "stb2_1 1626006833652ms 32767i16 host=\"host0\""
                      ]
-        code = self._conn.insert_telnet_lines(lines2_1)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_1, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_1")
         tdSql.checkRows(2)
@@ -113,8 +113,8 @@ class TDTestCase:
                         "stb2_2 1626006833652ms 2147483647i32 host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_2)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_2, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_2")
         tdSql.checkRows(2)
@@ -130,8 +130,8 @@ class TDTestCase:
                         "stb2_3 1626006833662ms 9223372036854775807 host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_3)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_3, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_3")
         tdSql.checkRows(3)
@@ -154,8 +154,8 @@ class TDTestCase:
                         "stb2_4 1626006833710ms -3.4E38f32 host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_4)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_4, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_4")
         tdSql.checkRows(10)
@@ -179,8 +179,8 @@ class TDTestCase:
                         "stb2_5 1626006833710ms 3.15 host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_5)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_5, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_5")
         tdSql.checkRows(11)
@@ -203,8 +203,8 @@ class TDTestCase:
                         "stb2_6 1626006833700ms FALSE host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_6)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_6, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_6")
         tdSql.checkRows(10)
@@ -220,8 +220,8 @@ class TDTestCase:
                         "stb2_7 1626006833630ms \"binary_val.()[]{}<>\" host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_7)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_7, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_7")
         tdSql.checkRows(3)
@@ -236,8 +236,8 @@ class TDTestCase:
                         "stb2_8 1626006833620ms L\"nchar_val数值二\" host=\"host0\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines2_8)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines2_8, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb2_8")
         tdSql.checkRows(2)
@@ -254,8 +254,8 @@ class TDTestCase:
                         "stb3_0 1626006833610ms 2 t1=-127i8 t2=-32767i16 t3=-2147483647i32 t4=-9223372036854775807i64 t5=-3.4E38f32 t6=-1.7E308f64 t7=false t8=\"binary_val_2\" t9=L\"标签值2\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines3_0)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines3_0, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb3_0")
         tdSql.checkRows(2)
@@ -298,8 +298,8 @@ class TDTestCase:
                         "stb3_1 1626006833610ms 3 ID=\"child_table3\" host=\"host3\""
                      ]
 
-        code = self._conn.insert_telnet_lines(lines3_1)
-        print("insert_telnet_lines result {}".format(code))
+        code = self._conn.insert_lines(lines3_1, 1)
+        print("insert_lines result {}".format(code))
 
         tdSql.query("select * from stb3_1")
         tdSql.checkRows(3)
diff --git a/tests/pytest/insert/line_insert.py b/tests/pytest/insert/line_insert.py
index 92fdd0f28e612994df414ea1b560152a3f2001a8..920d3c17571d6d8781aa046462a62e8bd9d79da6 100644
--- a/tests/pytest/insert/line_insert.py
+++ b/tests/pytest/insert/line_insert.py
@@ -42,17 +42,17 @@ class TDTestCase:
                     "stf,t1=4i64,t3=\"t4\",t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933641000000ns"
                 ]
 
-        code = self._conn.insert_lines(lines)
+        code = self._conn.insert_lines(lines, 0)
         print("insert_lines result {}".format(code))
 
         lines2 = [  "stg,t1=3i64,t2=4f64,t3=\"t3\" c1=3i64,c3=L\"passit\",c2=false,c4=4f64 1626006833639000000ns",
                     "stg,t1=4i64,t3=\"t4\",t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin\",c2=true,c4=5f64,c5=5f64 1626006833640000000ns"
                 ]
-        
-        code = self._conn.insert_lines([ lines2[0] ])
+
+        code = self._conn.insert_lines([ lines2[0] ], 0)
         print("insert_lines result {}".format(code))
 
-        self._conn.insert_lines([ lines2[1] ])
+        self._conn.insert_lines([ lines2[1] ], 0)
         print("insert_lines result {}".format(code))
 
         tdSql.query("select * from st")
@@ -75,8 +75,8 @@ class TDTestCase:
 
         self._conn.insert_lines([
                                 "sth,t1=4i64,t2=5f64,t4=5f64,ID=\"childtable\" c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933641ms",
-                                "sth,t1=4i64,t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933654ms"                    
-                                ])
+                                "sth,t1=4i64,t2=5f64,t4=5f64 c1=3i64,c3=L\"passitagin_stf\",c2=false,c5=5f64,c6=7u64 1626006933654ms"
+                                ], 0)
         tdSql.execute('reset query cache')
 
         tdSql.query('select tbname, * from sth')
diff --git a/tests/script/api/openTSDBTest.c b/tests/script/api/openTSDBTest.c
index 02f21f70e8d29c426b5eb8fb9721d08f521a4c33..b4219f30e0e8a4b1c415b1fbfce2d0a93690c416 100644
--- a/tests/script/api/openTSDBTest.c
+++ b/tests/script/api/openTSDBTest.c
@@ -26,7 +26,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb0_1 1626006833639000000ns 4i8 host=\"host0\" interface=\"eth0\"",
       "stb0_2 1626006833639000000ns 4i8 host=\"host0\" interface=\"eth0\"",
   };
-  code = taos_insert_telnet_lines(taos, lines0, 3);
+  code = taos_insert_lines(taos, lines0, 3, 1);
   if (code) {
     printf("lines0 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -40,7 +40,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb1 1626006833651ms 5i8 host=\"host0\"",
       "stb1 0 6i8 host=\"host0\"",
   };
-  code = taos_insert_telnet_lines(taos, lines1, 6);
+  code = taos_insert_lines(taos, lines1, 6, 1);
   if (code) {
     printf("lines1 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -51,7 +51,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_0 1626006833651ms -127i8 host=\"host0\"",
       "stb2_0 1626006833652ms 127i8 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_0, 2);
+  code = taos_insert_lines(taos, lines2_0, 2, 1);
   if (code) {
     printf("lines2_0 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -61,7 +61,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_1 1626006833651ms -32767i16 host=\"host0\"",
       "stb2_1 1626006833652ms 32767i16 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_1, 2);
+  code = taos_insert_lines(taos, lines2_1, 2, 1);
   if (code) {
     printf("lines2_1 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -71,7 +71,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_2 1626006833651ms -2147483647i32 host=\"host0\"",
       "stb2_2 1626006833652ms 2147483647i32 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_2, 2);
+  code = taos_insert_lines(taos, lines2_2, 2, 1);
   if (code) {
     printf("lines2_2 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -82,7 +82,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_3 1626006833652ms 9223372036854775807i64 host=\"host0\"",
       "stb2_3 1626006833662ms 9223372036854775807 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_3, 3);
+  code = taos_insert_lines(taos, lines2_3, 3, 1);
   if (code) {
     printf("lines2_3 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -100,7 +100,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_4 1626006833700ms 3.4E38f32 host=\"host0\"",
       "stb2_4 1626006833710ms -3.4E38f32 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_4, 10);
+  code = taos_insert_lines(taos, lines2_4, 10, 1);
   if (code) {
     printf("lines2_4 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -119,7 +119,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_5 1626006833700ms -1.7E308f64 host=\"host0\"",
       "stb2_5 1626006833710ms 3.15 host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_5, 11);
+  code = taos_insert_lines(taos, lines2_5, 11, 1);
   if (code) {
     printf("lines2_5 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -137,7 +137,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_6 1626006833690ms False host=\"host0\"",
       "stb2_6 1626006833700ms FALSE host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_6, 10);
+  code = taos_insert_lines(taos, lines2_6, 10, 1);
   if (code) {
     printf("lines2_6 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -148,7 +148,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_7 1626006833620ms \"binary_val.:;,./?|+-=\" host=\"host0\"",
       "stb2_7 1626006833630ms \"binary_val.()[]{}<>\" host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_7, 3);
+  code = taos_insert_lines(taos, lines2_7, 3, 1);
   if (code) {
     printf("lines2_7 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -158,7 +158,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb2_8 1626006833610ms L\"nchar_val数值一\" host=\"host0\"",
       "stb2_8 1626006833620ms L\"nchar_val数值二\" host=\"host0\""
   };
-  code = taos_insert_telnet_lines(taos, lines2_8, 2);
+  code = taos_insert_lines(taos, lines2_8, 2, 1);
   if (code) {
     printf("lines2_8 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -169,7 +169,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb3_0 1626006833610ms 1 t1=127i8 t2=32767i16 t3=2147483647i32 t4=9223372036854775807i64 t5=3.4E38f32 t6=1.7E308f64 t7=true t8=\"binary_val_1\" t9=L\"标签值1\"",
       "stb3_0 1626006833610ms 2 t1=-127i8 t2=-32767i16 t3=-2147483647i32 t4=-9223372036854775807i64 t5=-3.4E38f32 t6=-1.7E308f64 t7=false t8=\"binary_val_2\" t9=L\"标签值2\""
   };
-  code = taos_insert_telnet_lines(taos, lines3_0, 2);
+  code = taos_insert_lines(taos, lines3_0, 2, 1);
   if (code) {
     printf("lines3_0 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -180,7 +180,7 @@ void verify_telnet_insert(TAOS* taos) {
       "stb3_1 1626006833610ms 2 host=\"host2\" iD=\"child_table2\"",
       "stb3_1 1626006833610ms 3 ID=\"child_table3\" host=\"host3\""
   };
-  code = taos_insert_telnet_lines(taos, lines3_1, 3);
+  code = taos_insert_lines(taos, lines3_1, 3, 1);
   if (code) {
     printf("lines3_1 code: %d, %s.\n", code, tstrerror(code));
   }
@@ -201,7 +201,7 @@ void verify_json_insert(TAOS* taos) {
   (void)taos_select_db(taos, "db");
   int32_t code = 0;
 
-  char *message =
+  char *message[] = {
   "{                                      \
       \"metric\":\"cpu_load_0\",          \
       \"timestamp\": 1626006833610123,    \
@@ -212,14 +212,14 @@ void verify_json_insert(TAOS* taos) {
               \"interface1\": \"eth0\",   \
               \"Id\": \"tb0\"             \
           }                               \
-  }";
+  }"};
 
-  code = taos_insert_json_payload(taos, message);
+  code = taos_insert_lines(taos, message, 0, 2);
   if (code) {
     printf("payload_0 code: %d, %s.\n", code, tstrerror(code));
   }
 
-  char *message1 =
+  char *message1[] = {
   "[                                       \
     {                                      \
        \"metric\":\"cpu_load_1\",          \
@@ -243,14 +243,14 @@ void verify_json_insert(TAOS* taos) {
                \"Id\": \"tb2\"             \
            }                               \
     }                                      \
-   ]";
+   ]"};
 
-  code = taos_insert_json_payload(taos, message1);
+  code = taos_insert_lines(taos, message1, 0, 2);
   if (code) {
     printf("payload_1 code: %d, %s.\n", code, tstrerror(code));
   }
 
-  char *message2 =
+  char *message2[] = {
   "[                                       \
     {                                      \
        \"metric\":\"cpu_load_3\",          \
@@ -295,15 +295,15 @@ void verify_json_insert(TAOS* taos) {
                \"Id\": \"tb4\"             \
            }                               \
     }                                      \
-   ]";
-  code = taos_insert_json_payload(taos, message2);
+   ]"};
+  code = taos_insert_lines(taos, message2, 0, 2);
   if (code) {
     printf("payload_2 code: %d, %s.\n", code, tstrerror(code));
   }
 
 
   cJSON *payload, *tags;
-  char *payload_str;
+  char *payload_str[1];
 
   /* Default format */
   //number
@@ -317,14 +317,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload0_0 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //true
@@ -338,14 +338,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload0_1 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //false
@@ -359,14 +359,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload0_2 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //string
@@ -380,14 +380,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload0_3 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //timestamp 0 -> current time
@@ -401,14 +401,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload0_4 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   /* Nested format */
@@ -430,14 +430,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload1_0 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //milleseconds
@@ -456,14 +456,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload1_1 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //microseconds
@@ -482,14 +482,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload1_2 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //nanoseconds
@@ -508,14 +508,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload1_3 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //now
@@ -534,14 +534,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload1_4 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //metric value
@@ -566,14 +566,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_0 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //tinyint
@@ -596,14 +596,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_1 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //smallint
@@ -626,14 +626,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_2 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //int
@@ -656,14 +656,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_3 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //bigint
@@ -686,14 +686,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_4 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //float
@@ -716,14 +716,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_5 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //double
@@ -746,14 +746,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_6 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //binary
@@ -776,14 +776,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_7 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //nchar
@@ -806,14 +806,14 @@ void verify_json_insert(TAOS* taos) {
   cJSON_AddNumberToObject(tags, "t3", 10);
   cJSON_AddStringToObject(tags, "t4", "123_abc_.!@#$%^&*:;,./?|+-=()[]{}<>");
   cJSON_AddItemToObject(payload, "tags", tags);
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload2_8 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 
   //tag value
@@ -886,14 +886,14 @@ void verify_json_insert(TAOS* taos) {
 
   cJSON_AddItemToObject(payload, "tags", tags);
 
-  payload_str = cJSON_Print(payload);
+  *payload_str = cJSON_Print(payload);
   //printf("%s\n", payload_str);
 
-  code = taos_insert_json_payload(taos, payload_str);
+  code = taos_insert_lines(taos, payload_str, 0, 2);
   if (code) {
     printf("payload3_0 code: %d, %s.\n", code, tstrerror(code));
   }
-  free(payload_str);
+  free(*payload_str);
   cJSON_Delete(payload);
 }
 
diff --git a/tests/tsim/src/simExe.c b/tests/tsim/src/simExe.c
index 397accfea57fec92dbe2b7f9b5c4b730a91e9cbd..49273d9c8edabee3b6d85aaf6a31e08a29eaeee5 100644
--- a/tests/tsim/src/simExe.c
+++ b/tests/tsim/src/simExe.c
@@ -1084,7 +1084,7 @@ bool simExecuteLineInsertCmd(SScript *script, char *rest) {
   simInfo("script:%s, %s", script->fileName, rest);
   simLogSql(buf, true);
   char *  lines[] = {rest};
-  int32_t ret = taos_insert_lines(script->taos, lines, 1);
+  int32_t ret = taos_insert_lines(script->taos, lines, 1, 0);
   if (ret == TSDB_CODE_SUCCESS) {
     simDebug("script:%s, taos:%p, %s executed. success.", script->fileName, script->taos, rest);
     script->linePos++;
@@ -1107,7 +1107,7 @@ bool simExecuteLineInsertErrorCmd(SScript *script, char *rest) {
   simInfo("script:%s, %s", script->fileName, rest);
   simLogSql(buf, true);
   char *  lines[] = {rest};
-  int32_t ret = taos_insert_lines(script->taos, lines, 1);
+  int32_t ret = taos_insert_lines(script->taos, lines, 1, 0);
   if (ret == TSDB_CODE_SUCCESS) {
     sprintf(script->error, "script:%s, taos:%p, %s executed. expect failed, but success.", script->fileName, script->taos, rest);
     script->linePos++;