diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 5cf9e9855def12dc355e809e796495f9ce063a16..aa57607d6f9cf582d3269ce31a53a6cbd5b4171a 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -779,6 +779,7 @@ typedef struct {
   int8_t  cacheLastRow;
   int32_t numOfRetensions;
   SArray* pRetensions;
+  int8_t  schemaless;
 } SDbCfgRsp;
 
 int32_t tSerializeSDbCfgRsp(void* buf, int32_t bufLen, const SDbCfgRsp* pRsp);
diff --git a/include/libs/parser/parser.h b/include/libs/parser/parser.h
index ca825b9e2fb460b6aa35110c89535071a50cac52..6abd1ffa6d57834b2d36b72071001019276f5e99 100644
--- a/include/libs/parser/parser.h
+++ b/include/libs/parser/parser.h
@@ -49,6 +49,7 @@ typedef struct SParseContext {
   const char*      pUser;
   bool             isSuperUser;
   bool             async;
+  int8_t           schemalessType;
 } SParseContext;
 
 int32_t qParseSql(SParseContext* pCxt, SQuery** pQuery);
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index c3d27888971732f8b6c8ccd732d0063d93aec487..636435ef1607a523383352167b5520177d706c9d 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -674,6 +674,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_SML_INVALID_PROTOCOL_TYPE     TAOS_DEF_ERROR_CODE(0, 0x3000)
 #define TSDB_CODE_SML_INVALID_PRECISION_TYPE    TAOS_DEF_ERROR_CODE(0, 0x3001)
 #define TSDB_CODE_SML_INVALID_DATA              TAOS_DEF_ERROR_CODE(0, 0x3002)
+#define TSDB_CODE_SML_INVALID_DB_CONF           TAOS_DEF_ERROR_CODE(0, 0x3003)
 
 #ifdef __cplusplus
 }
diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index c5fa377fea704eefc2fbcb8ddd4d8eed9e3f5c69..74a828f027a8d82f5cbe9ba21323114bb2e74e25 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -151,6 +151,7 @@ typedef struct STscObj {
   int32_t       numOfReqs;  // number of sqlObj bound to this connection
   SAppInstInfo* pAppInfo;
   SHashObj*     pRequests;
+  int8_t        schemalessType;
 } STscObj;
 
 typedef struct SResultColumn {
diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 669b2bc97eb3e6fab04701aebbf80402432b44c1..35e354e952d32ad39c796475e98187dc033b0020 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -161,6 +161,7 @@ void *createTscObj(const char *user, const char *auth, const char *db, int32_t c
 
   taosThreadMutexInit(&pObj->mutex, NULL);
   pObj->id = taosAddRef(clientConnRefPool, pObj);
+  pObj->schemalessType = 0;
 
   tscDebug("connObj created, 0x%" PRIx64, pObj->id);
   return pObj;
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index ee6cea79a71a0a5342bd96fef1324260b1650827..8805c68401c0770e52fa7e716d5274136e229bc2 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -176,6 +176,7 @@ int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery, SStmtC
                        .pTransporter = pTscObj->pAppInfo->pTransporter,
                        .pStmtCb = pStmtCb,
                        .pUser = pTscObj->user,
+                       .schemalessType = pTscObj->schemalessType,
                        .isSuperUser = (0 == strcmp(pTscObj->user, TSDB_DEFAULT_USER))};
 
   cxt.mgmtEpSet = getEpSet_s(&pTscObj->pAppInfo->mgmtEp);
diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index 7d623072d664a4b9f1d77251812032f8c4fa4de1..8d1924b1c9143a4594339c2b630c7c8c73a316cd 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -2318,6 +2318,28 @@ cleanup:
   return code;
 }
 
+static int32_t isSchemalessDb(SSmlHandle* info){
+  SName          name;
+  tNameSetDbName(&name, info->taos->acctId, info->taos->db, strlen(info->taos->db));
+  char dbFname[TSDB_DB_FNAME_LEN] = {0};
+  tNameGetFullDbName(&name, dbFname);
+  SDbCfgInfo pInfo = {0};
+  SEpSet ep = getEpSet_s(&info->taos->pAppInfo->mgmtEp);
+
+  int32_t code = catalogGetDBCfg(info->pCatalog, info->taos->pAppInfo->pTransporter, &ep, dbFname, &pInfo);
+  if (code != TSDB_CODE_SUCCESS) {
+    info->pRequest->code = code;
+    smlBuildInvalidDataMsg(&info->msgBuf, "catalogGetDBCfg error, code:", tstrerror(code));
+    return code;
+  }
+  if (!pInfo.schemaless){
+    info->pRequest->code = TSDB_CODE_SML_INVALID_DB_CONF;
+    smlBuildInvalidDataMsg(&info->msgBuf, "can not insert into schemaless db:", dbFname);
+    return TSDB_CODE_SML_INVALID_DB_CONF;
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 /**
  * taos_schemaless_insert() parse and insert data points into database according to
  * different protocol.
@@ -2351,6 +2373,19 @@ TAOS_RES* taos_schemaless_insert(TAOS* taos, char* lines[], int numLines, int pr
     return (TAOS_RES*)request;
   }
 
+  info->taos->schemalessType = 1;
+  if(request->pDb == NULL){
+    request->code = TSDB_CODE_PAR_DB_NOT_SPECIFIED;
+    smlBuildInvalidDataMsg(&info->msgBuf, "Database not specified", NULL);
+    goto end;
+  }
+
+  if(isSchemalessDb(info) != TSDB_CODE_SUCCESS){
+    request->code = TSDB_CODE_SML_INVALID_DB_CONF;
+    smlBuildInvalidDataMsg(&info->msgBuf, "Cannot write data to a non schemaless database", NULL);
+    goto end;
+  }
+
   if (!lines) {
     request->code = TSDB_CODE_SML_INVALID_DATA;
     smlBuildInvalidDataMsg(&info->msgBuf, "lines is null", NULL);
diff --git a/source/client/test/smlTest.cpp b/source/client/test/smlTest.cpp
index 217699e36071e1e4c5e93e391e77a95c4f857af8..4684df8418559812d285db8b0401e21deeaf514e 100644
--- a/source/client/test/smlTest.cpp
+++ b/source/client/test/smlTest.cpp
@@ -1258,4 +1258,26 @@ TEST(testCase, sml_TD15742_Test) {
 
   destroyRequest(request);
   smlDestroyInfo(info);
-}
\ No newline at end of file
+}
+
+TEST(testCase, sml_params_Test) {
+  TAOS *taos = taos_connect("localhost", "root", "taosdata", NULL, 0);
+  ASSERT_NE(taos, nullptr);
+
+  TAOS_RES* pRes = taos_query(taos, "create database if not exists param");
+  taos_free_result(pRes);
+
+  const char *sql[] = {
+      "test_ms,t0=t c0=f 1626006833641",
+  };
+  TAOS_RES* res = taos_schemaless_insert(taos, (char**)sql, 1, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
+  ASSERT_EQ(taos_errno(res), TSDB_CODE_PAR_DB_NOT_SPECIFIED);
+  taos_free_result(pRes);
+
+  pRes = taos_query(taos, "use param");
+  taos_free_result(pRes);
+
+  res = taos_schemaless_insert(taos, (char**)sql, 1, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
+  ASSERT_EQ(taos_errno(res), TSDB_CODE_SML_INVALID_DB_CONF);
+  taos_free_result(pRes);
+}
diff --git a/source/common/src/systable.c b/source/common/src/systable.c
index 8207ffb22f42d865c54898530154d317af0ea19d..d5999411aea72b79f9c409af97bb1d81e8cad72e 100644
--- a/source/common/src/systable.c
+++ b/source/common/src/systable.c
@@ -89,7 +89,9 @@ static const SSysDbTableSchema userDBSchema[] = {
     {.name = "cachelast", .bytes = 1, .type = TSDB_DATA_TYPE_TINYINT},
     {.name = "precision", .bytes = 2 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
     {.name = "single_stable", .bytes = 1, .type = TSDB_DATA_TYPE_TINYINT},
+    {.name = "schemaless", .bytes = 1, .type = TSDB_DATA_TYPE_TINYINT},
     {.name = "status", .bytes = 10 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
+
     // {.name = "update", .bytes = 1, .type = TSDB_DATA_TYPE_TINYINT},  // disable update
 };
 
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 2962216b0cebe4841be58f2c52fd109629416d95..2ceee6da04e2493d30b7b3dfaf2de14d8304b68a 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -2277,6 +2277,7 @@ int32_t tSerializeSDbCfgRsp(void *buf, int32_t bufLen, const SDbCfgRsp *pRsp) {
     if (tEncodeI8(&encoder, pRetension->freqUnit) < 0) return -1;
     if (tEncodeI8(&encoder, pRetension->keepUnit) < 0) return -1;
   }
+  if (tEncodeI8(&encoder, pRsp->schemaless) < 0) return -1;
   tEndEncode(&encoder);
 
   int32_t tlen = encoder.pos;
@@ -2325,6 +2326,7 @@ int32_t tDeserializeSDbCfgRsp(void *buf, int32_t bufLen, SDbCfgRsp *pRsp) {
       return -1;
     }
   }
+  if (tDecodeI8(&decoder, &pRsp->schemaless) < 0) return -1;
   tEndDecode(&decoder);
 
   tDecoderClear(&decoder);
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index d0c737ae5a7518cf864f55ab3f5c9702b7f60073..3ef4a34a5c91b3d498d227d1a370e17da7943f4b 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -255,6 +255,7 @@ typedef struct {
   int8_t  hashMethod;  // default is 1
   int32_t numOfRetensions;
   SArray* pRetensions;
+  int8_t  schemaless;
 } SDbCfg;
 
 typedef struct {
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index c062a2c5523dd42ac5bcae27dc2863c058f8e374..9bba1a1b2ff2fed39cab7ed8373af9d89cdf606e 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -115,6 +115,7 @@ static SSdbRaw *mndDbActionEncode(SDbObj *pDb) {
     SDB_SET_INT8(pRaw, dataPos, pRetension->freqUnit, _OVER)
     SDB_SET_INT8(pRaw, dataPos, pRetension->keepUnit, _OVER)
   }
+  SDB_SET_INT8(pRaw, dataPos, pDb->cfg.schemaless, _OVER)
 
   SDB_SET_RESERVE(pRaw, dataPos, DB_RESERVE_SIZE, _OVER)
   SDB_SET_DATALEN(pRaw, dataPos, _OVER)
@@ -192,6 +193,7 @@ static SSdbRow *mndDbActionDecode(SSdbRaw *pRaw) {
       }
     }
   }
+  SDB_GET_INT8(pRaw, dataPos, &pDb->cfg.schemaless, _OVER)
 
   SDB_GET_RESERVE(pRaw, dataPos, DB_RESERVE_SIZE, _OVER)
   taosInitRWLatch(&pDb->lock);
@@ -380,6 +382,7 @@ static int32_t mndCheckDbCfg(SMnode *pMnode, SDbCfg *pCfg) {
   if (pCfg->replications < TSDB_MIN_DB_REPLICA || pCfg->replications > TSDB_MAX_DB_REPLICA) return -1;
   if (pCfg->replications != 1 && pCfg->replications != 3) return -1;
   if (pCfg->strict < TSDB_DB_STRICT_OFF || pCfg->strict > TSDB_DB_STRICT_ON) return -1;
+  if (pCfg->schemaless < TSDB_DB_SCHEMALESS_OFF || pCfg->schemaless > TSDB_DB_SCHEMALESS_ON) return -1;
   if (pCfg->cacheLastRow < TSDB_MIN_DB_CACHE_LAST_ROW || pCfg->cacheLastRow > TSDB_MAX_DB_CACHE_LAST_ROW) return -1;
   if (pCfg->hashMethod != 1) return -1;
   if (pCfg->replications > mndGetDnodeSize(pMnode)) {
@@ -411,6 +414,8 @@ static void mndSetDefaultDbCfg(SDbCfg *pCfg) {
   if (pCfg->strict < 0) pCfg->strict = TSDB_DEFAULT_DB_STRICT;
   if (pCfg->cacheLastRow < 0) pCfg->cacheLastRow = TSDB_DEFAULT_CACHE_LAST_ROW;
   if (pCfg->numOfRetensions < 0) pCfg->numOfRetensions = 0;
+  if (pCfg->schemaless < 0) pCfg->schemaless = TSDB_DB_SCHEMALESS_OFF;
+
 }
 
 static int32_t mndSetCreateDbRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroups) {
@@ -521,6 +526,7 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
       .strict = pCreate->strict,
       .cacheLastRow = pCreate->cacheLastRow,
       .hashMethod = 1,
+      .schemaless = pCreate->schemaless,
   };
 
   dbObj.cfg.numOfRetensions = pCreate->numOfRetensions;
@@ -899,6 +905,7 @@ static int32_t mndProcessGetDbCfgReq(SRpcMsg *pReq) {
   cfgRsp.cacheLastRow = pDb->cfg.cacheLastRow;
   cfgRsp.numOfRetensions = pDb->cfg.numOfRetensions;
   cfgRsp.pRetensions = pDb->cfg.pRetensions;
+  cfgRsp.schemaless = pDb->cfg.schemaless;
 
   int32_t contLen = tSerializeSDbCfgRsp(NULL, 0, &cfgRsp);
   void   *pRsp = rpcMallocCont(contLen);
@@ -1542,8 +1549,12 @@ static void dumpDbInfoData(SSDataBlock *pBlock, SDbObj *pDb, SShowObj *pShow, in
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.numOfStables, false);
 
+    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+    colDataAppend(pColInfo, rows, (const char *)&pDb->cfg.schemaless, false);
+
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols);
     colDataAppend(pColInfo, rows, (const char *)statusB, false);
+
   }
 }
 
diff --git a/source/libs/parser/inc/parInt.h b/source/libs/parser/inc/parInt.h
index 3efe6700d2339b2234d33f868c0b42fa993d1b64..bdef3becf7272ba476bffcc0c8693d5976ec152e 100644
--- a/source/libs/parser/inc/parInt.h
+++ b/source/libs/parser/inc/parInt.h
@@ -32,6 +32,7 @@ int32_t authenticate(SParseContext* pParseCxt, SQuery* pQuery);
 int32_t translate(SParseContext* pParseCxt, SQuery* pQuery);
 int32_t extractResultSchema(const SNode* pRoot, int32_t* numOfCols, SSchema** pSchema);
 int32_t calculateConstant(SParseContext* pParseCxt, SQuery* pQuery);
+int32_t isNotSchemalessDb(SParseContext* pContext);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index 8003c011a17af1b81468571054f3fb1be1ed101e..7729d4c415b8ca548077faab8bae3381773630db 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -1404,6 +1404,23 @@ static int32_t parseInsertBody(SInsertParseContext* pCxt) {
   return buildOutput(pCxt);
 }
 
+int32_t isNotSchemalessDb(SParseContext* pContext){
+  SName          name;
+  tNameSetDbName(&name, pContext->acctId, pContext->db, strlen(pContext->db));
+  char dbFname[TSDB_DB_FNAME_LEN] = {0};
+  tNameGetFullDbName(&name, dbFname);
+  SDbCfgInfo pInfo = {0};
+  int32_t code = catalogGetDBCfg(pContext->pCatalog, pContext->pTransporter, &pContext->mgmtEpSet, dbFname, &pInfo);
+  if (code != TSDB_CODE_SUCCESS) {
+    parserError("catalogGetDBCfg error, code:%s, dbFName:%s", tstrerror(code), dbFname);
+    return code;
+  }
+  if (pInfo.schemaless){
+    parserError("can not insert into schemaless db:%s", dbFname);
+    return TSDB_CODE_SML_INVALID_DB_CONF;
+  }
+  return TSDB_CODE_SUCCESS;
+}
 // INSERT INTO
 //   tb_name
 //       [USING stb_name [(tag1_name, ...)] TAGS (tag1_value, ...)]
@@ -1451,6 +1468,11 @@ int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery) {
   (*pQuery)->msgType = TDMT_VND_SUBMIT;
   (*pQuery)->pRoot = (SNode*)context.pOutput;
 
+  int32_t code = isNotSchemalessDb(pContext);
+  if(code != TSDB_CODE_SUCCESS){
+    return code;
+  }
+
   if (NULL == (*pQuery)->pTableList) {
     (*pQuery)->pTableList = taosArrayInit(taosHashGetSize(context.pTableNameHashObj), sizeof(SName));
     if (NULL == (*pQuery)->pTableList) {
@@ -1460,7 +1482,7 @@ int32_t parseInsertSql(SParseContext* pContext, SQuery** pQuery) {
 
   context.pOutput->payloadType = PAYLOAD_TYPE_KV;
 
-  int32_t code = skipInsertInto(&context.pSql, &context.msg);
+  code = skipInsertInto(&context.pSql, &context.msg);
   if (TSDB_CODE_SUCCESS == code) {
     code = parseInsertBody(&context);
   }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 55a473982b97dc67308f6851e66d44898cd25fb7..18d64905c983002d466929357bcca526115379ac 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -2647,6 +2647,11 @@ static int32_t checkCreateTable(STranslateContext* pCxt, SCreateTableStmt* pStmt
   if (TSDB_CODE_SUCCESS == code) {
     code = checkTableSchema(pCxt, pStmt);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    if(pCxt->pParseCxt->schemalessType == 0 && isNotSchemalessDb(pCxt->pParseCxt) != TSDB_CODE_SUCCESS){
+      code = TSDB_CODE_SML_INVALID_DB_CONF;
+    }
+  }
   return code;
 }
 
@@ -4425,6 +4430,9 @@ static SArray* serializeVgroupsCreateTableBatch(int32_t acctId, SHashObj* pVgrou
 }
 
 static int32_t rewriteCreateMultiTable(STranslateContext* pCxt, SQuery* pQuery) {
+  if(pCxt->pParseCxt->schemalessType == 0 && isNotSchemalessDb(pCxt->pParseCxt) != TSDB_CODE_SUCCESS){
+    return TSDB_CODE_SML_INVALID_DB_CONF;
+  }
   SCreateMultiTableStmt* pStmt = (SCreateMultiTableStmt*)pQuery->pRoot;
 
   SHashObj* pVgroupHashmap = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), false, HASH_NO_LOCK);
@@ -4845,6 +4853,9 @@ static int32_t buildModifyVnodeArray(STranslateContext* pCxt, SAlterTableStmt* p
 }
 
 static int32_t rewriteAlterTable(STranslateContext* pCxt, SQuery* pQuery) {
+  if(pCxt->pParseCxt->schemalessType == 0 && isNotSchemalessDb(pCxt->pParseCxt) != TSDB_CODE_SUCCESS){
+    return TSDB_CODE_SML_INVALID_DB_CONF;
+  }
   SAlterTableStmt* pStmt = (SAlterTableStmt*)pQuery->pRoot;
 
   STableMeta* pTableMeta = NULL;
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index b81d81c736b177952c10cd722cacdca59c3e37bc..e8edd142d6a530e2d4406576ab997ea122a11d61 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -470,6 +470,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_UDF_INVALID_OUTPUT_TYPE,      "udf invalid output ty
 TAOS_DEFINE_ERROR(TSDB_CODE_SML_INVALID_PROTOCOL_TYPE,    "Invalid line protocol type")
 TAOS_DEFINE_ERROR(TSDB_CODE_SML_INVALID_PRECISION_TYPE,   "Invalid timestamp precision type")
 TAOS_DEFINE_ERROR(TSDB_CODE_SML_INVALID_DATA,             "Invalid data type")
+TAOS_DEFINE_ERROR(TSDB_CODE_SML_INVALID_DB_CONF,          "Invalid schemaless db config")
 
 #ifdef TAOS_ERROR_C
 };
diff --git a/tests/test/c/sdbDump.c b/tests/test/c/sdbDump.c
index 1781dd31836376cb3e502de0bd05bde50e66288a..e5986cf4dddaa7191e7047e76b51305baefc55c1 100644
--- a/tests/test/c/sdbDump.c
+++ b/tests/test/c/sdbDump.c
@@ -86,6 +86,7 @@ void dumpDb(SSdb *pSdb, SJson *json) {
     tjsonAddIntegerToObject(item, "cacheLastRow", pObj->cfg.cacheLastRow);
     tjsonAddIntegerToObject(item, "hashMethod", pObj->cfg.hashMethod);
     tjsonAddIntegerToObject(item, "numOfRetensions", pObj->cfg.numOfRetensions);
+    tjsonAddIntegerToObject(item, "schemaless", pObj->cfg.schemaless);
 
     sdbRelease(pSdb, pObj);
   }