diff --git a/source/client/inc/clientSml.h b/source/client/inc/clientSml.h
index b74d0b3494..2fc058ee00 100644
--- a/source/client/inc/clientSml.h
+++ b/source/client/inc/clientSml.h
@@ -177,7 +177,7 @@ typedef struct {
   int32_t      lineNum;
   SSmlMsgBuf   msgBuf;
 
-//  cJSON       *root;  // for parse json
+  cJSON       *root;  // for parse json
   int8_t             offset[4];
   SSmlLineInfo      *lines; // element is SSmlLineInfo
 
@@ -226,6 +226,7 @@ int32_t           is_same_child_table_telnet(const void *a, const void *b);
 int64_t           smlParseOpenTsdbTime(SSmlHandle *info, const char *data, int32_t len);
 int32_t           smlClearForRerun(SSmlHandle *info);
 int32_t           smlParseValue(SSmlKv *pVal, SSmlMsgBuf *msg);
+uint8_t           smlGetTimestampLen(int64_t num);
 
 int32_t smlParseInfluxString(SSmlHandle *info, char *sql, char *sqlEnd, SSmlLineInfo *elements);
 int32_t smlParseTelnetString(SSmlHandle *info, char *sql, char *sqlEnd, SSmlLineInfo *elements);
diff --git a/source/client/src/clientSmlJson.c b/source/client/src/clientSmlJson.c
index 3de1397f72..5d97444622 100644
--- a/source/client/src/clientSmlJson.c
+++ b/source/client/src/clientSmlJson.c
@@ -19,6 +19,9 @@
 #include <string.h>
 #include "clientSml.h"
 
+#define OTD_JSON_SUB_FIELDS_NUM 2
+#define OTD_JSON_FIELDS_NUM     4
+
 #define JUMP_JSON_SPACE(start) \
 while(*(start)){\
   if(unlikely(*(start) > 32))\
@@ -406,9 +409,7 @@ static int32_t smlParseJSONString(SSmlHandle *info, char **start, SSmlLineInfo *
   if(**start == '\0') return TSDB_CODE_SUCCESS;
 
   SSmlKv kv = {.key = VALUE, .keyLen = VALUE_LEN, .value = elements->cols, .length = (size_t)elements->colsLen};
-  if (smlParseNumber(&kv, &info->msgBuf)) {
-    kv.length = (int16_t)tDataTypes[kv.type].bytes;
-  }else{
+  if (smlParseValue(&kv, &info->msgBuf) != TSDB_CODE_SUCCESS) {
     return TSDB_CODE_TSC_INVALID_VALUE;
   }
 
@@ -456,6 +457,636 @@ static int32_t smlParseJSONString(SSmlHandle *info, char **start, SSmlLineInfo *
   return TSDB_CODE_SUCCESS;
 }
 
+static inline int32_t smlParseMetricFromJSON(SSmlHandle *info, cJSON *metric, SSmlLineInfo *elements) {
+  elements->measureLen = strlen(metric->valuestring);
+  if (IS_INVALID_TABLE_LEN(elements->measureLen)) {
+    uError("OTD:0x%" PRIx64 " Metric lenght is 0 or large than 192", info->id);
+    return TSDB_CODE_TSC_INVALID_TABLE_ID_LENGTH;
+  }
+
+  elements->measure = metric->valuestring;
+  return TSDB_CODE_SUCCESS;
+}
+
+const char *jsonName[OTD_JSON_FIELDS_NUM] = {"metric", "timestamp", "value", "tags"};
+static int32_t smlGetJsonElements(cJSON *root, cJSON ***marks){
+  cJSON *child = root->child;
+
+  for (int i = 0; i < OTD_JSON_FIELDS_NUM; ++i) {
+    while(child != NULL)
+    {
+      if(strcasecmp(child->string, jsonName[i]) == 0){
+        *marks[i] = child;
+        break;
+      }
+      child = child->next;
+    }
+    if(*marks[i] == NULL){
+      uError("smlGetJsonElements error, not find mark:%s", jsonName[i]);
+      return -1;
+    }
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlConvertJSONBool(SSmlKv *pVal, char *typeStr, cJSON *value) {
+  if (strcasecmp(typeStr, "bool") != 0) {
+    uError("OTD:invalid type(%s) for JSON Bool", typeStr);
+    return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+  pVal->type = TSDB_DATA_TYPE_BOOL;
+  pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+  pVal->i = value->valueint;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlConvertJSONNumber(SSmlKv *pVal, char *typeStr, cJSON *value) {
+  // tinyint
+  if (strcasecmp(typeStr, "i8") == 0 || strcasecmp(typeStr, "tinyint") == 0) {
+    if (!IS_VALID_TINYINT(value->valuedouble)) {
+      uError("OTD:JSON value(%f) cannot fit in type(tinyint)", value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_TINYINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->i = value->valuedouble;
+    return TSDB_CODE_SUCCESS;
+  }
+  // smallint
+  if (strcasecmp(typeStr, "i16") == 0 || strcasecmp(typeStr, "smallint") == 0) {
+    if (!IS_VALID_SMALLINT(value->valuedouble)) {
+      uError("OTD:JSON value(%f) cannot fit in type(smallint)", value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_SMALLINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->i = value->valuedouble;
+    return TSDB_CODE_SUCCESS;
+  }
+  // int
+  if (strcasecmp(typeStr, "i32") == 0 || strcasecmp(typeStr, "int") == 0) {
+    if (!IS_VALID_INT(value->valuedouble)) {
+      uError("OTD:JSON value(%f) cannot fit in type(int)", value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_INT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->i = value->valuedouble;
+    return TSDB_CODE_SUCCESS;
+  }
+  // bigint
+  if (strcasecmp(typeStr, "i64") == 0 || strcasecmp(typeStr, "bigint") == 0) {
+    pVal->type = TSDB_DATA_TYPE_BIGINT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    if (value->valuedouble >= (double)INT64_MAX) {
+      pVal->i = INT64_MAX;
+    } else if (value->valuedouble <= (double)INT64_MIN) {
+      pVal->i = INT64_MIN;
+    } else {
+      pVal->i = value->valuedouble;
+    }
+    return TSDB_CODE_SUCCESS;
+  }
+  // float
+  if (strcasecmp(typeStr, "f32") == 0 || strcasecmp(typeStr, "float") == 0) {
+    if (!IS_VALID_FLOAT(value->valuedouble)) {
+      uError("OTD:JSON value(%f) cannot fit in type(float)", value->valuedouble);
+      return TSDB_CODE_TSC_VALUE_OUT_OF_RANGE;
+    }
+    pVal->type = TSDB_DATA_TYPE_FLOAT;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->f = value->valuedouble;
+    return TSDB_CODE_SUCCESS;
+  }
+  // double
+  if (strcasecmp(typeStr, "f64") == 0 || strcasecmp(typeStr, "double") == 0) {
+    pVal->type = TSDB_DATA_TYPE_DOUBLE;
+    pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+    pVal->d = value->valuedouble;
+    return TSDB_CODE_SUCCESS;
+  }
+
+  // if reach here means type is unsupported
+  uError("OTD:invalid type(%s) for JSON Number", typeStr);
+  return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+}
+
+static int32_t smlConvertJSONString(SSmlKv *pVal, char *typeStr, cJSON *value) {
+  if (strcasecmp(typeStr, "binary") == 0) {
+    pVal->type = TSDB_DATA_TYPE_BINARY;
+  } else if (strcasecmp(typeStr, "nchar") == 0) {
+    pVal->type = TSDB_DATA_TYPE_NCHAR;
+  } else {
+    uError("OTD:invalid type(%s) for JSON String", typeStr);
+    return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+  pVal->length = (int16_t)strlen(value->valuestring);
+
+  if (pVal->type == TSDB_DATA_TYPE_BINARY && pVal->length > TSDB_MAX_BINARY_LEN - VARSTR_HEADER_SIZE) {
+    return TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN;
+  }
+  if (pVal->type == TSDB_DATA_TYPE_NCHAR &&
+      pVal->length > (TSDB_MAX_NCHAR_LEN - VARSTR_HEADER_SIZE) / TSDB_NCHAR_SIZE) {
+    return TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN;
+  }
+
+  pVal->value = value->valuestring;
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlParseValueFromJSONObj(cJSON *root, SSmlKv *kv) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+  int32_t size = cJSON_GetArraySize(root);
+
+  if (size != OTD_JSON_SUB_FIELDS_NUM) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *value = cJSON_GetObjectItem(root, "value");
+  if (value == NULL) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  cJSON *type = cJSON_GetObjectItem(root, "type");
+  if (!cJSON_IsString(type)) {
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  switch (value->type) {
+    case cJSON_True:
+    case cJSON_False: {
+      ret = smlConvertJSONBool(kv, type->valuestring, value);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    case cJSON_Number: {
+      ret = smlConvertJSONNumber(kv, type->valuestring, value);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    case cJSON_String: {
+      ret = smlConvertJSONString(kv, type->valuestring, value);
+      if (ret != TSDB_CODE_SUCCESS) {
+        return ret;
+      }
+      break;
+    }
+    default:
+      return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlParseValueFromJSON(cJSON *root, SSmlKv *kv) {
+  switch (root->type) {
+    case cJSON_True:
+    case cJSON_False: {
+      kv->type = TSDB_DATA_TYPE_BOOL;
+      kv->length = (int16_t)tDataTypes[kv->type].bytes;
+      kv->i = root->valueint;
+      break;
+    }
+    case cJSON_Number: {
+      kv->type = TSDB_DATA_TYPE_DOUBLE;
+      kv->length = (int16_t)tDataTypes[kv->type].bytes;
+      kv->d = root->valuedouble;
+      break;
+    }
+    case cJSON_String: {
+      /* set default JSON type to binary/nchar according to
+       * user configured parameter tsDefaultJSONStrType
+       */
+
+      char *tsDefaultJSONStrType = "nchar";  // todo
+      smlConvertJSONString(kv, tsDefaultJSONStrType, root);
+      break;
+    }
+    case cJSON_Object: {
+      int32_t ret = smlParseValueFromJSONObj(root, kv);
+      if (ret != TSDB_CODE_SUCCESS) {
+        uError("OTD:Failed to parse value from JSON Obj");
+        return ret;
+      }
+      break;
+    }
+    default:
+      return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlParseTagsFromJSONExt(SSmlHandle *info, cJSON *tags, SSmlLineInfo *elements) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+
+  elements->tags = cJSON_PrintUnformatted(tags);
+  elements->tagsLen = strlen(elements->tags);
+  if(is_same_child_table_telnet(elements, &info->preLine) == 0){
+    return TSDB_CODE_SUCCESS;
+  }
+
+  bool isSameMeasure = IS_SAME_SUPER_TABLE;
+
+  int     cnt = 0;
+  SArray *preLineKV = info->preLineTagKV;
+  bool    isSuperKVInit = true;
+  SArray *superKV = NULL;
+  if(info->dataFormat){
+    if(unlikely(!isSameMeasure)){
+      SSmlSTableMeta *sMeta = (SSmlSTableMeta *)nodeListGet(info->superTables, elements->measure, elements->measureLen, NULL);
+
+      if(unlikely(sMeta == NULL)){
+        sMeta = smlBuildSTableMeta(info->dataFormat);
+        STableMeta * pTableMeta = smlGetMeta(info, elements->measure, elements->measureLen);
+        sMeta->tableMeta = pTableMeta;
+        if(pTableMeta == NULL){
+          info->dataFormat = false;
+          info->reRun      = true;
+          return TSDB_CODE_SUCCESS;
+        }
+        nodeListSet(&info->superTables, elements->measure, elements->measureLen, sMeta, NULL);
+      }
+      info->currSTableMeta = sMeta->tableMeta;
+      superKV = sMeta->tags;
+
+      if(unlikely(taosArrayGetSize(superKV) == 0)){
+        isSuperKVInit = false;
+      }
+      taosArraySetSize(preLineKV, 0);
+    }
+  }else{
+    taosArraySetSize(preLineKV, 0);
+  }
+
+  int32_t tagNum = cJSON_GetArraySize(tags);
+  for (int32_t i = 0; i < tagNum; ++i) {
+    cJSON *tag = cJSON_GetArrayItem(tags, i);
+    if (unlikely(tag == NULL)) {
+      return TSDB_CODE_TSC_INVALID_JSON;
+    }
+//    if(unlikely(tag == cMeasure)) continue;
+    size_t keyLen = strlen(tag->string);
+    if (unlikely(IS_INVALID_COL_LEN(keyLen))) {
+      uError("OTD:Tag key length is 0 or too large than 64");
+      return TSDB_CODE_TSC_INVALID_COLUMN_LENGTH;
+    }
+
+    // add kv to SSmlKv
+    SSmlKv kv ={.key = tag->string, .keyLen = keyLen};
+    // value
+    ret = smlParseValueFromJSON(tag, &kv);
+    if (unlikely(ret != TSDB_CODE_SUCCESS)) {
+      return ret;
+    }
+
+    if(info->dataFormat){
+      if(unlikely(cnt + 1 > info->currSTableMeta->tableInfo.numOfTags)){
+        info->dataFormat = false;
+        info->reRun      = true;
+        return TSDB_CODE_SUCCESS;
+      }
+
+      if(isSameMeasure){
+        if(unlikely(cnt >= taosArrayGetSize(preLineKV))) {
+          info->dataFormat = false;
+          info->reRun      = true;
+          return TSDB_CODE_SUCCESS;
+        }
+        SSmlKv *preKV = (SSmlKv *)taosArrayGet(preLineKV, cnt);
+        if(unlikely(kv.length > preKV->length)){
+          preKV->length = kv.length;
+          SSmlSTableMeta *tableMeta = (SSmlSTableMeta *)nodeListGet(info->superTables, elements->measure, elements->measureLen, NULL);
+          ASSERT(tableMeta != NULL);
+
+          SSmlKv *oldKV = (SSmlKv *)taosArrayGet(tableMeta->tags, cnt);
+          oldKV->length = kv.length;
+          info->needModifySchema = true;
+        }
+        if(unlikely(!IS_SAME_KEY)){
+          info->dataFormat = false;
+          info->reRun      = true;
+          return TSDB_CODE_SUCCESS;
+        }
+      }else{
+        if(isSuperKVInit){
+          if(unlikely(cnt >= taosArrayGetSize(superKV))) {
+            info->dataFormat = false;
+            info->reRun      = true;
+            return TSDB_CODE_SUCCESS;
+          }
+          SSmlKv *preKV = (SSmlKv *)taosArrayGet(superKV, cnt);
+          if(unlikely(kv.length > preKV->length)) {
+            preKV->length = kv.length;
+          }else{
+            kv.length = preKV->length;
+          }
+          info->needModifySchema = true;
+
+          if(unlikely(!IS_SAME_KEY)){
+            info->dataFormat = false;
+            info->reRun      = true;
+            return TSDB_CODE_SUCCESS;
+          }
+        }else{
+          taosArrayPush(superKV, &kv);
+        }
+        taosArrayPush(preLineKV, &kv);
+      }
+    }else{
+      taosArrayPush(preLineKV, &kv);
+    }
+    cnt++;
+  }
+
+  SSmlTableInfo *tinfo = (SSmlTableInfo *)nodeListGet(info->childTables, elements->tags, POINTER_BYTES, is_same_child_table_telnet);
+  if (unlikely(tinfo == NULL)) {
+    tinfo = smlBuildTableInfo(1, elements->measure, elements->measureLen);
+    if (unlikely(!tinfo)) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    tinfo->tags = taosArrayDup(preLineKV, NULL);
+
+    smlSetCTableName(tinfo);
+    if (info->dataFormat) {
+      info->currSTableMeta->uid = tinfo->uid;
+      tinfo->tableDataCtx = smlInitTableDataCtx(info->pQuery, info->currSTableMeta);
+      if (tinfo->tableDataCtx == NULL) {
+        smlBuildInvalidDataMsg(&info->msgBuf, "smlInitTableDataCtx error", NULL);
+        return TSDB_CODE_SML_INVALID_DATA;
+      }
+    }
+
+    nodeListSet(&info->childTables, tags, POINTER_BYTES, tinfo, is_same_child_table_telnet);
+  }
+  if (info->dataFormat) info->currTableDataCtx = tinfo->tableDataCtx;
+
+  return ret;
+}
+
+static int64_t smlParseTSFromJSONObj(SSmlHandle *info, cJSON *root, int32_t toPrecision) {
+  int32_t size = cJSON_GetArraySize(root);
+  if (unlikely(size != OTD_JSON_SUB_FIELDS_NUM)) {
+    smlBuildInvalidDataMsg(&info->msgBuf, "invalidate json", NULL);
+    return -1;
+  }
+
+  cJSON *value = cJSON_GetObjectItem(root, "value");
+  if (unlikely(!cJSON_IsNumber(value))) {
+    smlBuildInvalidDataMsg(&info->msgBuf, "invalidate json", NULL);
+    return -1;
+  }
+
+  cJSON *type = cJSON_GetObjectItem(root, "type");
+  if (unlikely(!cJSON_IsString(type))) {
+    smlBuildInvalidDataMsg(&info->msgBuf, "invalidate json", NULL);
+    return -1;
+  }
+
+  double timeDouble = value->valuedouble;
+  if (unlikely(smlDoubleToInt64OverFlow(timeDouble))) {
+    smlBuildInvalidDataMsg(&info->msgBuf, "timestamp is too large", NULL);
+    return -1;
+  }
+
+  if (timeDouble == 0) {
+    return taosGetTimestampNs()/smlFactorNS[toPrecision];
+  }
+
+  if (timeDouble < 0) {
+    return timeDouble;
+  }
+
+  int64_t tsInt64 = timeDouble;
+  size_t typeLen = strlen(type->valuestring);
+  if (typeLen == 1 && (type->valuestring[0] == 's' || type->valuestring[0] == 'S')) {
+    // seconds
+    int8_t fromPrecision = TSDB_TIME_PRECISION_SECONDS;
+    if(smlFactorS[toPrecision] < INT64_MAX / tsInt64){
+      return tsInt64 * smlFactorS[toPrecision];
+    }
+    return -1;
+  } else if (typeLen == 2 && (type->valuestring[1] == 's' || type->valuestring[1] == 'S')) {
+    switch (type->valuestring[0]) {
+      case 'm':
+      case 'M':
+        // milliseconds
+        return convertTimePrecision(tsInt64, TSDB_TIME_PRECISION_MILLI, toPrecision);
+        break;
+      case 'u':
+      case 'U':
+        // microseconds
+        return convertTimePrecision(tsInt64, TSDB_TIME_PRECISION_MICRO, toPrecision);
+        break;
+      case 'n':
+      case 'N':
+        return convertTimePrecision(tsInt64, TSDB_TIME_PRECISION_NANO, toPrecision);
+        break;
+      default:
+        return -1;
+    }
+  } else {
+    return -1;
+  }
+}
+
+uint8_t smlGetTimestampLen(int64_t num) {
+  uint8_t len = 0;
+  while ((num /= 10) != 0) {
+    len++;
+  }
+  len++;
+  return len;
+}
+
+static int64_t smlParseTSFromJSON(SSmlHandle *info, cJSON *timestamp) {
+  // Timestamp must be the first KV to parse
+  int32_t toPrecision = info->currSTableMeta ? info->currSTableMeta->tableInfo.precision : TSDB_TIME_PRECISION_NANO;
+  if (cJSON_IsNumber(timestamp)) {
+    // timestamp value 0 indicates current system time
+    double timeDouble = timestamp->valuedouble;
+    if (unlikely(smlDoubleToInt64OverFlow(timeDouble))) {
+      smlBuildInvalidDataMsg(&info->msgBuf, "timestamp is too large", NULL);
+      return -1;
+    }
+
+    if (unlikely(timeDouble < 0)) {
+      smlBuildInvalidDataMsg(&info->msgBuf,
+                             "timestamp is negative", NULL);
+      return timeDouble;
+    }else if (unlikely(timeDouble == 0)) {
+      return taosGetTimestampNs()/smlFactorNS[toPrecision];
+    }
+
+    uint8_t tsLen = smlGetTimestampLen((int64_t)timeDouble);
+
+    int8_t fromPrecision = smlGetTsTypeByLen(tsLen);
+    if (unlikely(fromPrecision == -1)) {
+      smlBuildInvalidDataMsg(&info->msgBuf,
+                             "timestamp precision can only be seconds(10 digits) or milli seconds(13 digits)", NULL);
+      return -1;
+    }
+    int64_t tsInt64 = timeDouble;
+    if(fromPrecision == TSDB_TIME_PRECISION_SECONDS){
+      if(smlFactorS[toPrecision] < INT64_MAX / tsInt64){
+        return tsInt64 * smlFactorS[toPrecision];
+      }
+      return -1;
+    }else{
+      return convertTimePrecision(timeDouble, fromPrecision, toPrecision);
+    }
+  } else if (cJSON_IsObject(timestamp)) {
+    return smlParseTSFromJSONObj(info, timestamp, toPrecision);
+  } else {
+    smlBuildInvalidDataMsg(&info->msgBuf,
+                           "invalidate json", NULL);
+    return -1;
+  }
+}
+
+static int32_t smlParseJSONStringExt(SSmlHandle *info, cJSON *root, SSmlLineInfo *elements) {
+  int32_t ret = TSDB_CODE_SUCCESS;
+
+  cJSON *metricJson = NULL;
+  cJSON *tsJson = NULL;
+  cJSON *valueJson = NULL;
+  cJSON *tagsJson = NULL;
+
+  cJSON **marks[OTD_JSON_FIELDS_NUM] = {&metricJson, &tsJson, &valueJson, &tagsJson};
+  ret = smlGetJsonElements(root, marks);
+  if (unlikely(ret != TSDB_CODE_SUCCESS)) {
+    return ret;
+  }
+
+  // Parse metric
+  ret = smlParseMetricFromJSON(info, metricJson, elements);
+  if (unlikely(ret != TSDB_CODE_SUCCESS)) {
+    uError("OTD:0x%" PRIx64 " Unable to parse metric from JSON payload", info->id);
+    return ret;
+  }
+
+  // Parse metric value
+  SSmlKv kv = {.key = VALUE, .keyLen = VALUE_LEN};
+  ret = smlParseValueFromJSON(valueJson, &kv);
+  if (unlikely(ret)) {
+    uError("OTD:0x%" PRIx64 " Unable to parse metric value from JSON payload", info->id);
+    return ret;
+  }
+
+  // Parse tags
+  ret = smlParseTagsFromJSONExt(info, tagsJson, elements);
+  if (unlikely(ret)) {
+    uError("OTD:0x%" PRIx64 " Unable to parse tags from JSON payload", info->id);
+    return ret;
+  }
+
+  if(unlikely(info->reRun)){
+    return TSDB_CODE_SUCCESS;
+  }
+
+  // Parse timestamp
+  // notice!!! put ts back to tag to ensure get meta->precision
+  int64_t ts = smlParseTSFromJSON(info, tsJson);
+  if (unlikely(ts < 0)) {
+    uError("OTD:0x%" PRIx64 " Unable to parse timestamp from JSON payload", info->id);
+    return TSDB_CODE_INVALID_TIMESTAMP;
+  }
+  SSmlKv kvTs = { .key = TS, .keyLen = TS_LEN, .type = TSDB_DATA_TYPE_TIMESTAMP, .i = ts, .length = (size_t)tDataTypes[TSDB_DATA_TYPE_TIMESTAMP].bytes};
+
+  if(info->dataFormat){
+    ret = smlBuildCol(info->currTableDataCtx, info->currSTableMeta->schema, &kvTs, 0);
+    if(ret == TSDB_CODE_SUCCESS){
+      ret = smlBuildCol(info->currTableDataCtx, info->currSTableMeta->schema, &kv, 1);
+    }
+    if(ret == TSDB_CODE_SUCCESS){
+      ret = smlBuildRow(info->currTableDataCtx);
+    }
+    if (unlikely(ret != TSDB_CODE_SUCCESS)) {
+      smlBuildInvalidDataMsg(&info->msgBuf, "smlBuildCol error", NULL);
+      return ret;
+    }
+  }else{
+    if(elements->colArray == NULL){
+      elements->colArray = taosArrayInit(16, sizeof(SSmlKv));
+    }
+    taosArrayPush(elements->colArray, &kvTs);
+    taosArrayPush(elements->colArray, &kv);
+  }
+  info->preLine = *elements;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t smlParseJSONExt(SSmlHandle *info, char *payload) {
+  int32_t payloadNum = 0;
+  int32_t ret = TSDB_CODE_SUCCESS;
+
+  if (unlikely(payload == NULL)) {
+    uError("SML:0x%" PRIx64 " empty JSON Payload", info->id);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  info->root = cJSON_Parse(payload);
+  if (unlikely(info->root == NULL)) {
+    uError("SML:0x%" PRIx64 " parse json failed:%s", info->id, payload);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  // multiple data points must be sent in JSON array
+  if (cJSON_IsArray(info->root)) {
+    payloadNum = cJSON_GetArraySize(info->root);
+  } else if (cJSON_IsObject(info->root)) {
+    payloadNum = 1;
+  } else {
+    uError("SML:0x%" PRIx64 " Invalid JSON Payload", info->id);
+    return TSDB_CODE_TSC_INVALID_JSON;
+  }
+
+  info->lineNum = payloadNum;
+  info->dataFormat = true;
+  if (unlikely(info->lines != NULL)) {
+    taosMemoryFree(info->lines);
+    info->lines = NULL;
+  }
+  ret = smlClearForRerun(info);
+  cJSON *head = (payloadNum == 1 && cJSON_IsObject(info->root)) ? info->root : info->root->child;
+
+  int cnt = 0;
+  cJSON *dataPoint = head;
+  while (dataPoint) {
+    if(info->dataFormat) {
+      SSmlLineInfo element = {0};
+      ret = smlParseJSONStringExt(info, dataPoint, &element);
+    }else{
+      ret = smlParseJSONStringExt(info, dataPoint, info->lines + cnt);
+    }
+    if (unlikely(ret != TSDB_CODE_SUCCESS)) {
+      uError("SML:0x%" PRIx64 " Invalid JSON Payload", info->id);
+      return ret;
+    }
+
+    if(unlikely(info->reRun)){
+      cnt = 0;
+      dataPoint = head;
+      info->lineNum = payloadNum;
+      ret = smlClearForRerun(info);
+      if(ret != TSDB_CODE_SUCCESS){
+        return ret;
+      }
+      continue;
+    }
+    cnt++;
+    dataPoint = dataPoint->next;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t smlParseJSON(SSmlHandle *info, char *payload) {
   int32_t payloadNum = 1 << 15;
   int32_t ret = TSDB_CODE_SUCCESS;
@@ -478,7 +1109,7 @@ int32_t smlParseJSON(SSmlHandle *info, char *payload) {
     }
     if (unlikely(ret != TSDB_CODE_SUCCESS)) {
       uError("SML:0x%" PRIx64 " Invalid JSON Payload", info->id);
-      return ret;
+      return smlParseJSONExt(info, payload);
     }
 
     if(*dataPointStart == '\0') break;
diff --git a/source/client/test/smlTest.cpp b/source/client/test/smlTest.cpp
index d608447506..4ff638b802 100644
--- a/source/client/test/smlTest.cpp
+++ b/source/client/test/smlTest.cpp
@@ -411,28 +411,28 @@ TEST(testCase, smlParseCols_Test) {
   smlDestroyInfo(info);
 }
 
-//TEST(testCase, smlGetTimestampLen_Test) {
-//  uint8_t len = smlGetTimestampLen(0);
-//  ASSERT_EQ(len, 1);
-//
-//  len = smlGetTimestampLen(1);
-//  ASSERT_EQ(len, 1);
-//
-//  len = smlGetTimestampLen(10);
-//  ASSERT_EQ(len, 2);
-//
-//  len = smlGetTimestampLen(390);
-//  ASSERT_EQ(len, 3);
-//
-//  len = smlGetTimestampLen(-1);
-//  ASSERT_EQ(len, 1);
-//
-//  len = smlGetTimestampLen(-10);
-//  ASSERT_EQ(len, 2);
-//
-//  len = smlGetTimestampLen(-390);
-//  ASSERT_EQ(len, 3);
-//}
+TEST(testCase, smlGetTimestampLen_Test) {
+  uint8_t len = smlGetTimestampLen(0);
+  ASSERT_EQ(len, 1);
+
+  len = smlGetTimestampLen(1);
+  ASSERT_EQ(len, 1);
+
+  len = smlGetTimestampLen(10);
+  ASSERT_EQ(len, 2);
+
+  len = smlGetTimestampLen(390);
+  ASSERT_EQ(len, 3);
+
+  len = smlGetTimestampLen(-1);
+  ASSERT_EQ(len, 1);
+
+  len = smlGetTimestampLen(-10);
+  ASSERT_EQ(len, 2);
+
+  len = smlGetTimestampLen(-390);
+  ASSERT_EQ(len, 3);
+}
 
 TEST(testCase, smlParseNumber_Test) {
   SSmlKv     kv = {0};
diff --git a/tests/system-test/1-insert/opentsdb_json_taosc_insert.py b/tests/system-test/1-insert/opentsdb_json_taosc_insert.py
index 93f3c7410d..44243fe029 100644
--- a/tests/system-test/1-insert/opentsdb_json_taosc_insert.py
+++ b/tests/system-test/1-insert/opentsdb_json_taosc_insert.py
@@ -1719,7 +1719,6 @@ class TDTestCase:
             print(err.errno)
 
     def runAll(self):
-        """
         for value_type in ["obj", "default"]:
             self.initCheckCase(value_type)
             self.symbolsCheckCase(value_type)
@@ -1772,7 +1771,7 @@ class TDTestCase:
         # self.sStbStbDdataDtsMtInsertMultiThreadCheckCase()
         # self.sStbDtbDdataDtsMtInsertMultiThreadCheckCase()
         # self.lengthIcreaseCrashCheckCase()
-        """
+
     def run(self):
         print("running {}".format(__file__))
         self.createDb()
diff --git a/tests/system-test/1-insert/opentsdb_telnet_line_taosc_insert.py b/tests/system-test/1-insert/opentsdb_telnet_line_taosc_insert.py
index a17a2d9514..f588827206 100644
--- a/tests/system-test/1-insert/opentsdb_telnet_line_taosc_insert.py
+++ b/tests/system-test/1-insert/opentsdb_telnet_line_taosc_insert.py
@@ -1416,8 +1416,8 @@ class TDTestCase:
         self.symbolsCheckCase()
         self.tsCheckCase()
         self.openTstbTelnetTsCheckCase()
-        #self.idSeqCheckCase()
-        #self.idLetterCheckCase()
+        self.idSeqCheckCase()
+        self.idLetterCheckCase()
         self.noIdCheckCase()
         self.maxColTagCheckCase()
         self.stbTbNameCheckCase()
@@ -1450,7 +1450,7 @@ class TDTestCase:
         self.spellCheckCase()
         self.pointTransCheckCase()
         self.defaultTypeCheckCase()
-        #self.tbnameTagsColsNameCheckCase()
+        self.tbnameTagsColsNameCheckCase()
         # # # MultiThreads
         # self.stbInsertMultiThreadCheckCase()
         # self.sStbStbDdataInsertMultiThreadCheckCase()