diff --git a/include/common/taosdef.h b/include/common/taosdef.h
index f252143fa6..4d307def10 100644
--- a/include/common/taosdef.h
+++ b/include/common/taosdef.h
@@ -63,9 +63,11 @@ typedef enum {
 } ETsdbStatisStatus;
 
 typedef enum {
-  TSDB_SMA_STAT_OK = 0,       // ready to provide service
-  TSDB_SMA_STAT_EXPIRED = 1,  // not ready or expired
-} ETsdbSmaStat;
+  TSDB_SMA_STAT_UNKNOWN = -1,  // unknown
+  TSDB_SMA_STAT_OK = 0,        // ready to provide service
+  TSDB_SMA_STAT_EXPIRED = 1,   // not ready or expired
+  TSDB_SMA_STAT_DROPPED = 2,   // sma dropped
+} ETsdbSmaStat;                // bit operation
 
 typedef enum {
   TSDB_SMA_TYPE_BLOCK = 0,       // Block-wise SMA
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 9e1e1c53dc..4391d58a64 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -336,8 +336,9 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TDB_IVLD_TAG_VAL              TAOS_DEF_ERROR_CODE(0, 0x0615)
 #define TSDB_CODE_TDB_NO_CACHE_LAST_ROW         TAOS_DEF_ERROR_CODE(0, 0x0616)
 #define TSDB_CODE_TDB_TABLE_RECREATED           TAOS_DEF_ERROR_CODE(0, 0x0617)
-#define TSDB_CODE_TDB_NO_SMA_INDEX_IN_META      TAOS_DEF_ERROR_CODE(0, 0x0618)
-#define TSDB_CODE_TDB_TDB_ENV_OPEN_ERROR        TAOS_DEF_ERROR_CODE(0, 0x0619)
+#define TSDB_CODE_TDB_TDB_ENV_OPEN_ERROR        TAOS_DEF_ERROR_CODE(0, 0x0618)
+#define TSDB_CODE_TDB_NO_SMA_INDEX_IN_META      TAOS_DEF_ERROR_CODE(0, 0x0619)
+#define TSDB_CODE_TDB_INVALID_SMA_STAT          TAOS_DEF_ERROR_CODE(0, 0x0620)
 
 // query
 #define TSDB_CODE_QRY_INVALID_QHANDLE           TAOS_DEF_ERROR_CODE(0, 0x0700)
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 1ea00566f4..e78015d56f 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -313,7 +313,7 @@ int32_t tSerializeSVCreateTbReq(void **buf, SVCreateTbReq *pReq) {
       for (col_id_t i = 0; i < pReq->stbCfg.nBSmaCols; ++i) {
         tlen += taosEncodeFixedI16(buf, pReq->stbCfg.pBSmaCols[i]);
       }
-      if(pReq->rollup && NULL != pReq->stbCfg.pRSmaParam) {
+      if(pReq->rollup && pReq->stbCfg.pRSmaParam) {
         SRSmaParam *param = pReq->stbCfg.pRSmaParam;
         tlen += taosEncodeFixedU32(buf, (uint32_t)param->xFilesFactor);
         tlen += taosEncodeFixedI8(buf, param->delayUnit);
@@ -336,12 +336,12 @@ int32_t tSerializeSVCreateTbReq(void **buf, SVCreateTbReq *pReq) {
         tlen += taosEncodeFixedI32(buf, pReq->ntbCfg.pSchema[i].bytes);
         tlen += taosEncodeString(buf, pReq->ntbCfg.pSchema[i].name);
       }
-      tlen += taosEncodeFixedI16(buf, pReq->stbCfg.nBSmaCols);
-      for (col_id_t i = 0; i < pReq->stbCfg.nBSmaCols; ++i) {
-        tlen += taosEncodeFixedI16(buf, pReq->stbCfg.pBSmaCols[i]);
+      tlen += taosEncodeFixedI16(buf, pReq->ntbCfg.nBSmaCols);
+      for (col_id_t i = 0; i < pReq->ntbCfg.nBSmaCols; ++i) {
+        tlen += taosEncodeFixedI16(buf, pReq->ntbCfg.pBSmaCols[i]);
       }
-      if(pReq->rollup && NULL != pReq->stbCfg.pRSmaParam) {
-        SRSmaParam *param = pReq->stbCfg.pRSmaParam;
+      if(pReq->rollup && pReq->ntbCfg.pRSmaParam) {
+        SRSmaParam *param = pReq->ntbCfg.pRSmaParam;
         tlen += taosEncodeFixedU32(buf, (uint32_t)param->xFilesFactor);
         tlen += taosEncodeFixedI8(buf, param->delayUnit);
         tlen += taosEncodeFixedI8(buf, param->nFuncIds);
@@ -424,18 +424,18 @@ void *tDeserializeSVCreateTbReq(void *buf, SVCreateTbReq *pReq) {
         buf = taosDecodeFixedI32(buf, &pReq->ntbCfg.pSchema[i].bytes);
         buf = taosDecodeStringTo(buf, pReq->ntbCfg.pSchema[i].name);
       }
-      buf = taosDecodeFixedI16(buf, &(pReq->stbCfg.nBSmaCols));
-      if(pReq->stbCfg.nBSmaCols > 0) {
-        pReq->stbCfg.pBSmaCols = (col_id_t *)malloc(pReq->stbCfg.nBSmaCols * sizeof(col_id_t));
-        for (col_id_t i = 0; i < pReq->stbCfg.nBSmaCols; ++i) {
-          buf = taosDecodeFixedI16(buf, pReq->stbCfg.pBSmaCols + i);
+      buf = taosDecodeFixedI16(buf, &(pReq->ntbCfg.nBSmaCols));
+      if(pReq->ntbCfg.nBSmaCols > 0) {
+        pReq->ntbCfg.pBSmaCols = (col_id_t *)malloc(pReq->ntbCfg.nBSmaCols * sizeof(col_id_t));
+        for (col_id_t i = 0; i < pReq->ntbCfg.nBSmaCols; ++i) {
+          buf = taosDecodeFixedI16(buf, pReq->ntbCfg.pBSmaCols + i);
         }
       } else {
-        pReq->stbCfg.pBSmaCols = NULL;
+        pReq->ntbCfg.pBSmaCols = NULL;
       }
       if(pReq->rollup) {
-        pReq->stbCfg.pRSmaParam = (SRSmaParam *)malloc(sizeof(SRSmaParam));
-        SRSmaParam *param = pReq->stbCfg.pRSmaParam;
+        pReq->ntbCfg.pRSmaParam = (SRSmaParam *)malloc(sizeof(SRSmaParam));
+        SRSmaParam *param = pReq->ntbCfg.pRSmaParam;
         buf = taosDecodeFixedU32(buf, (uint32_t*)&param->xFilesFactor);
         buf = taosDecodeFixedI8(buf, &param->delayUnit);
         buf = taosDecodeFixedI8(buf, &param->nFuncIds);
@@ -448,7 +448,7 @@ void *tDeserializeSVCreateTbReq(void *buf, SVCreateTbReq *pReq) {
         }
         buf = taosDecodeFixedI64(buf, &param->delay);
       } else {
-        pReq->stbCfg.pRSmaParam = NULL;
+        pReq->ntbCfg.pRSmaParam = NULL;
       }
       break;
     default:
diff --git a/source/dnode/vnode/inc/meta.h b/source/dnode/vnode/inc/meta.h
index a48f437c97..149aac1206 100644
--- a/source/dnode/vnode/inc/meta.h
+++ b/source/dnode/vnode/inc/meta.h
@@ -51,7 +51,7 @@ int     metaCreateTable(SMeta *pMeta, STbCfg *pTbCfg);
 int     metaDropTable(SMeta *pMeta, tb_uid_t uid);
 int     metaCommit(SMeta *pMeta);
 int32_t metaCreateTSma(SMeta *pMeta, SSmaCfg *pCfg);
-int32_t metaDropTSma(SMeta *pMeta, char *indexName);
+int32_t metaDropTSma(SMeta *pMeta, int64_t indexUid);
 
 // For Query
 STbCfg *        metaGetTbInfoByUid(SMeta *pMeta, tb_uid_t uid);
diff --git a/source/dnode/vnode/inc/tsdb.h b/source/dnode/vnode/inc/tsdb.h
index 7b93f7580d..2b10c885b9 100644
--- a/source/dnode/vnode/inc/tsdb.h
+++ b/source/dnode/vnode/inc/tsdb.h
@@ -96,6 +96,7 @@ int    tsdbCommit(STsdb *pTsdb);
  */
 int32_t tsdbInsertTSmaData(STsdb *pTsdb, char *msg);
 int32_t tsdbUpdateSmaWindow(STsdb *pTsdb, int8_t smaType, char *msg);
+int32_t tsdbDropTSmaData(STsdb *pTsdb, int64_t indexUid);
 
 /**
  * @brief Insert RSma(Time-range-wise Rollup SMA) data.
diff --git a/source/dnode/vnode/src/inc/metaDef.h b/source/dnode/vnode/src/inc/metaDef.h
index 16a53baef0..bc1017f0c7 100644
--- a/source/dnode/vnode/src/inc/metaDef.h
+++ b/source/dnode/vnode/src/inc/metaDef.h
@@ -34,7 +34,7 @@ void metaCloseDB(SMeta* pMeta);
 int  metaSaveTableToDB(SMeta* pMeta, STbCfg* pTbCfg);
 int  metaRemoveTableFromDb(SMeta* pMeta, tb_uid_t uid);
 int  metaSaveSmaToDB(SMeta* pMeta, STSma* pTbCfg);
-int  metaRemoveSmaFromDb(SMeta* pMeta, const char* indexName);
+int  metaRemoveSmaFromDb(SMeta* pMeta, int64_t indexUid);
 
 // SMetaCache
 int  metaOpenCache(SMeta* pMeta);
diff --git a/source/dnode/vnode/src/inc/tsdbSma.h b/source/dnode/vnode/src/inc/tsdbSma.h
index f934b0263d..874f85994a 100644
--- a/source/dnode/vnode/src/inc/tsdbSma.h
+++ b/source/dnode/vnode/src/inc/tsdbSma.h
@@ -16,15 +16,15 @@
 #ifndef _TD_TSDB_SMA_H_
 #define _TD_TSDB_SMA_H_
 
-typedef struct SSmaStat SSmaStat;
-typedef struct SSmaEnv  SSmaEnv;
+typedef struct SSmaStat     SSmaStat;
+typedef struct SSmaEnv      SSmaEnv;
 
 struct SSmaEnv {
   TdThreadRwlock lock;
-  SDiskID          did;
-  TDBEnv           dbEnv;  // TODO: If it's better to put it in smaIndex level?
-  char *           path;   // relative path
-  SSmaStat *       pStat;
+  SDiskID        did;
+  TDBEnv         dbEnv;  // TODO: If it's better to put it in smaIndex level?
+  char          *path;   // relative path
+  SSmaStat      *pStat;
 };
 
 #define SMA_ENV_LOCK(env)       ((env)->lock)
@@ -77,4 +77,6 @@ static FORCE_INLINE int tsdbUnLockSma(SSmaEnv *pEnv) {
   return 0;
 }
 
+
+
 #endif /* _TD_TSDB_SMA_H_ */
\ No newline at end of file
diff --git a/source/dnode/vnode/src/meta/metaBDBImpl.c b/source/dnode/vnode/src/meta/metaBDBImpl.c
index 2dd8386d7a..e4bad9e94b 100644
--- a/source/dnode/vnode/src/meta/metaBDBImpl.c
+++ b/source/dnode/vnode/src/meta/metaBDBImpl.c
@@ -259,7 +259,7 @@ int metaSaveSmaToDB(SMeta *pMeta, STSma *pSmaCfg) {
   return 0;
 }
 
-int metaRemoveSmaFromDb(SMeta *pMeta, const char *indexName) {
+int metaRemoveSmaFromDb(SMeta *pMeta,  int64_t indexUid) {
   // TODO
 #if 0
   DBT key = {0};
diff --git a/source/dnode/vnode/src/meta/metaIdx.c b/source/dnode/vnode/src/meta/metaIdx.c
index 881ea4f46d..818da14738 100644
--- a/source/dnode/vnode/src/meta/metaIdx.c
+++ b/source/dnode/vnode/src/meta/metaIdx.c
@@ -121,11 +121,11 @@ int32_t metaCreateTSma(SMeta *pMeta, SSmaCfg *pCfg) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t metaDropTSma(SMeta *pMeta, char* indexName) {
+int32_t metaDropTSma(SMeta *pMeta, int64_t indexUid) {
   // TODO: Validate the cfg
   // TODO: add atomicity
 
-  if (metaRemoveSmaFromDb(pMeta, indexName) < 0) {
+  if (metaRemoveSmaFromDb(pMeta, indexUid) < 0) {
     // TODO: handle error
     return -1;
   }
diff --git a/source/dnode/vnode/src/tsdb/tsdbSma.c b/source/dnode/vnode/src/tsdb/tsdbSma.c
index 0eb2d525b3..502ba60709 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSma.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSma.c
@@ -25,6 +25,7 @@ static const char *TSDB_SMA_DNAME[] = {
 #define SMA_STORAGE_TSDB_TIMES  10
 #define SMA_STORAGE_SPLIT_HOURS 24
 #define SMA_KEY_LEN             18  // tableUid_colId_TSKEY 8+2+8
+#define SMA_DROP_EXPIRED_TIME   10  // default is 10 seconds
 
 #define SMA_STATE_HASH_SLOT      4
 #define SMA_STATE_ITEM_HASH_SLOT 32
@@ -60,10 +61,11 @@ typedef struct {
 typedef struct {
   /**
    * @brief The field 'state' is here to demonstrate if one smaIndex is ready to provide service.
-   *    - TSDB_SMA_STAT_EXPIRED: 1) If sma calculation of history TS data is not finished; 2) Or if the TSDB is open,
-   * without information about its previous state.
    *    - TSDB_SMA_STAT_OK: 1) The sma calculation of history data is finished; 2) Or recevied information from
    * Streaming Module or TSDB local persistence.
+   *    - TSDB_SMA_STAT_EXPIRED: 1) If sma calculation of history TS data is not finished; 2) Or if the TSDB is open,
+   * without information about its previous state.
+   *    - TSDB_SMA_STAT_DROPPED: 1)sma dropped
    */
   int8_t    state;           // ETsdbSmaStat
   SHashObj *expiredWindows;  // key: skey of time window, value: N/A
@@ -80,6 +82,7 @@ struct SSmaStat {
 // expired window
 static int32_t  tsdbUpdateExpiredWindow(STsdb *pTsdb, ETsdbSmaType smaType, char *msg);
 static int32_t  tsdbInitSmaStat(SSmaStat **pSmaStat);
+static void *   tsdbFreeSmaStatItem(SSmaStatItem *pSmaStatItem);
 static int32_t  tsdbDestroySmaState(SSmaStat *pSmaStat);
 static SSmaEnv *tsdbNewSmaEnv(const STsdb *pTsdb, const char *path, SDiskID did);
 static int32_t  tsdbInitSmaEnv(STsdb *pTsdb, const char *path, SDiskID did, SSmaEnv **pEnv);
@@ -109,7 +112,55 @@ static void    tsdbGetSmaDir(int32_t vgId, ETsdbSmaType smaType, char dirName[])
 static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, char *msg);
 static int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, char *msg);
 
+// mgmt interface
+static int32_t tsdbDropTSmaDataImpl(STsdb *pTsdb, int64_t indexUid);
+
 // implementation
+static FORCE_INLINE int8_t tsdbSmaStat(SSmaStatItem *pStatItem) {
+  if (pStatItem) {
+    return atomic_load_8(&pStatItem->state);
+  }
+  return TSDB_SMA_STAT_UNKNOWN;
+}
+
+static FORCE_INLINE bool tsdbSmaStatIsOK(SSmaStatItem *pStatItem, int8_t *state) {
+  if(!pStatItem) {
+    return false;
+  }
+
+  if (state) {
+    *state = atomic_load_8(&pStatItem->state);
+    return *state == TSDB_SMA_STAT_OK;
+  }
+  return atomic_load_8(&pStatItem->state) == TSDB_SMA_STAT_OK;
+}
+
+static FORCE_INLINE bool tsdbSmaStatIsExpired(SSmaStatItem *pStatItem) {
+  return pStatItem ? (atomic_load_8(&pStatItem->state) & TSDB_SMA_STAT_EXPIRED) : true;
+}
+
+static FORCE_INLINE bool tsdbSmaStatIsDropped(SSmaStatItem *pStatItem) {
+  return pStatItem ? (atomic_load_8(&pStatItem->state) & TSDB_SMA_STAT_DROPPED) : true;
+}
+
+static FORCE_INLINE void tsdbSmaStatSetOK(SSmaStatItem *pStatItem) {
+  if (pStatItem) {
+    atomic_store_8(&pStatItem->state, TSDB_SMA_STAT_OK);
+  }
+}
+
+static FORCE_INLINE void tsdbSmaStatSetExpired(SSmaStatItem *pStatItem) {
+  if (pStatItem) {
+    atomic_or_fetch_8(&pStatItem->state, TSDB_SMA_STAT_EXPIRED);
+  }
+}
+
+static FORCE_INLINE void tsdbSmaStatSetDropped(SSmaStatItem *pStatItem) {
+  if (pStatItem) {
+    atomic_or_fetch_8(&pStatItem->state, TSDB_SMA_STAT_DROPPED);
+  }
+}
+
 static void tsdbGetSmaDir(int32_t vgId, ETsdbSmaType smaType, char dirName[]) {
   snprintf(dirName, TSDB_FILENAME_LEN, "vnode%svnode%d%stsdb%s%s", TD_DIRSEP, vgId, TD_DIRSEP, TD_DIRSEP,
            TSDB_SMA_DNAME[smaType]);
@@ -252,6 +303,16 @@ static SSmaStatItem *tsdbNewSmaStatItem(int8_t state) {
   return pItem;
 }
 
+static void *tsdbFreeSmaStatItem(SSmaStatItem *pSmaStatItem) {
+  if (pSmaStatItem != NULL) {
+    tdDestroyTSma(pSmaStatItem->pSma);
+    tfree(pSmaStatItem->pSma);
+    taosHashCleanup(pSmaStatItem->expiredWindows);
+    tfree(pSmaStatItem);
+  }
+  return NULL;
+}
+
 /**
  * @brief Release resources allocated for its member fields, not including itself.
  *
@@ -264,12 +325,7 @@ int32_t tsdbDestroySmaState(SSmaStat *pSmaStat) {
     void *item = taosHashIterate(pSmaStat->smaStatItems, NULL);
     while (item != NULL) {
       SSmaStatItem *pItem = *(SSmaStatItem **)item;
-      if (pItem != NULL) {
-        tdDestroyTSma(pItem->pSma);
-        tfree(pItem->pSma);
-        taosHashCleanup(pItem->expiredWindows);
-        tfree(pItem);
-      }
+      tsdbFreeSmaStatItem(pItem);
       item = taosHashIterate(pSmaStat->smaStatItems, item);
     }
     taosHashCleanup(pSmaStat->smaStatItems);
@@ -711,6 +767,148 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, char *msg) {
   STsdbCfg *        pCfg = REPO_CFG(pTsdb);
   STSmaDataWrapper *pData = (STSmaDataWrapper *)msg;
   SSmaEnv *         pEnv = atomic_load_ptr(&pTsdb->pTSmaEnv);
+  int64_t indexUid = SMA_TEST_INDEX_UID;
+
+
+  if (pEnv == NULL) {
+    terrno = TSDB_CODE_INVALID_PTR;
+    tsdbWarn("vgId:%d insert tSma data failed since pTSmaEnv is NULL", REPO_ID(pTsdb));
+    return terrno;
+  }
+
+  if (pData->dataLen <= 0) {
+    TASSERT(0);
+    terrno = TSDB_CODE_INVALID_PARA;
+    return TSDB_CODE_FAILED;
+  }
+
+  STSmaWriteH tSmaH = {0};
+
+  if (tsdbInitTSmaWriteH(&tSmaH, pTsdb, pData) != 0) {
+    return TSDB_CODE_FAILED;
+  }
+
+  SSmaStat *pStat = SMA_ENV_STAT(pTsdb->pTSmaEnv);
+  SSmaStatItem *pItem = NULL;
+
+  tsdbRefSmaStat(pTsdb, pStat);
+
+  if (pStat && pStat->smaStatItems) {
+    pItem = taosHashGet(pStat->smaStatItems, &indexUid, sizeof(indexUid));
+  }
+  if ((pItem == NULL) || ((pItem = *(SSmaStatItem **)pItem) == NULL) || tsdbSmaStatIsDropped(pItem)) {
+    terrno = TSDB_CODE_TDB_INVALID_SMA_STAT;
+    tsdbUnRefSmaStat(pTsdb, pStat);
+    return TSDB_CODE_FAILED;
+  }
+
+  char    rPath[TSDB_FILENAME_LEN] = {0};
+  char    aPath[TSDB_FILENAME_LEN] = {0};
+  snprintf(rPath, TSDB_FILENAME_LEN, "%s%s%" PRIi64, SMA_ENV_PATH(pEnv), TD_DIRSEP, indexUid);
+  tfsAbsoluteName(REPO_TFS(pTsdb), SMA_ENV_DID(pEnv), rPath, aPath);
+  if (!taosCheckExistFile(aPath)) {
+    if (tfsMkdirRecurAt(REPO_TFS(pTsdb), rPath, SMA_ENV_DID(pEnv)) != TSDB_CODE_SUCCESS) {
+      tsdbUnRefSmaStat(pTsdb, pStat);
+      return TSDB_CODE_FAILED;
+    }
+  }
+
+  // Step 1: Judge the storage level and days
+  int32_t storageLevel = tsdbGetSmaStorageLevel(pData->interval, pData->intervalUnit);
+  int32_t daysPerFile = tsdbGetTSmaDays(pTsdb, tSmaH.interval, storageLevel);
+  int32_t fid = (int32_t)(TSDB_KEY_FID(pData->skey, daysPerFile, pCfg->precision));
+
+  // Step 2: Set the DFile for storage of SMA index, and iterate/split the TSma data and store to B+Tree index file
+  //         - Set and open the DFile or the B+Tree file
+  // TODO: tsdbStartTSmaCommit();
+  tsdbSetTSmaDataFile(&tSmaH, pData, indexUid, fid);
+  if (tsdbOpenDBF(pTsdb->pTSmaEnv->dbEnv, &tSmaH.dFile) != 0) {
+    tsdbWarn("vgId:%d open DB file %s failed since %s", REPO_ID(pTsdb),
+             tSmaH.dFile.path ? tSmaH.dFile.path : "path is NULL", tstrerror(terrno));
+    tsdbDestroyTSmaWriteH(&tSmaH);
+    tsdbUnRefSmaStat(pTsdb, pStat);
+    return TSDB_CODE_FAILED;
+  }
+
+  if (tsdbInsertTSmaDataSection(&tSmaH, pData) != 0) {
+    tsdbWarn("vgId:%d insert tSma data section failed since %s", REPO_ID(pTsdb), tstrerror(terrno));
+    tsdbDestroyTSmaWriteH(&tSmaH);
+    tsdbUnRefSmaStat(pTsdb, pStat);
+    return TSDB_CODE_FAILED;
+  }
+  // TODO:tsdbEndTSmaCommit();
+
+  // Step 3: reset the SSmaStat
+  tsdbResetExpiredWindow(pTsdb, SMA_ENV_STAT(pTsdb->pTSmaEnv), pData->indexUid, pData->skey);
+
+  tsdbDestroyTSmaWriteH(&tSmaH);
+  tsdbUnRefSmaStat(pTsdb, pStat);
+  return TSDB_CODE_SUCCESS;
+}
+
+/**
+ * @brief Drop tSma data and local cache
+ *        - insert/query reference
+ * @param pTsdb 
+ * @param msg 
+ * @return int32_t 
+ */
+static int32_t tsdbDropTSmaDataImpl(STsdb *pTsdb, int64_t indexUid) {
+  SSmaEnv *pEnv = atomic_load_ptr(&pTsdb->pTSmaEnv);
+
+  // clear local cache
+  if (pEnv) {
+    tsdbDebug("vgId:%d drop tSma local cache for %" PRIi64, REPO_ID(pTsdb), indexUid);
+
+    SSmaStatItem *pItem = taosHashGet(SMA_ENV_STAT_ITEMS(pEnv), &indexUid, sizeof(indexUid));
+    if ((pItem != NULL) || ((pItem = *(SSmaStatItem **)pItem) != NULL)) {
+      if (tsdbSmaStatIsDropped(pItem)) {
+        tsdbDebug("vgId:%d tSma stat is already dropped for %" PRIi64, REPO_ID(pTsdb), indexUid);
+        return TSDB_CODE_TDB_INVALID_ACTION;  // TODO: duplicate drop msg should be intercept by mnode
+      }
+
+      tsdbWLockSma(pEnv);
+      if (tsdbSmaStatIsDropped(pItem)) {
+        tsdbUnLockSma(pEnv);
+        tsdbDebug("vgId:%d tSma stat is already dropped for %" PRIi64, REPO_ID(pTsdb), indexUid);
+        return TSDB_CODE_TDB_INVALID_ACTION;  // TODO: duplicate drop msg should be intercept by mnode
+      }
+      tsdbSmaStatSetDropped(pItem);
+      tsdbUnLockSma(pEnv);
+
+      int32_t nSleep = 0;
+      while (true) {
+        if (T_REF_VAL_GET(SMA_ENV_STAT(pEnv)) <= 0) {
+          break;
+        }
+        taosSsleep(1);
+        if (++nSleep > SMA_DROP_EXPIRED_TIME) {
+          break;
+        };
+      }
+
+      tsdbFreeSmaStatItem(pItem);
+      tsdbDebug("vgId:%d getTSmaDataImpl failed since no index %" PRIi64 " in local cache", REPO_ID(pTsdb), indexUid);
+    }
+  }
+  // clear sma data files
+  // TODO: 
+}
+
+static int32_t tsdbSetRSmaDataFile(STSmaWriteH *pSmaH, STSmaDataWrapper *pData, int32_t fid) {
+  STsdb *pTsdb = pSmaH->pTsdb;
+
+  char tSmaFile[TSDB_FILENAME_LEN] = {0};
+  snprintf(tSmaFile, TSDB_FILENAME_LEN, "v%df%d.rsma", REPO_ID(pTsdb), fid);
+  pSmaH->dFile.path = strdup(tSmaFile);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, char *msg) {
+  STsdbCfg *        pCfg = REPO_CFG(pTsdb);
+  STSmaDataWrapper *pData = (STSmaDataWrapper *)msg;
+  SSmaEnv *         pEnv = atomic_load_ptr(&pTsdb->pRSmaEnv);
 
   if (pEnv == NULL) {
     terrno = TSDB_CODE_INVALID_PTR;
@@ -771,51 +969,6 @@ static int32_t tsdbInsertTSmaDataImpl(STsdb *pTsdb, char *msg) {
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t tsdbSetRSmaDataFile(STSmaWriteH *pSmaH, STSmaDataWrapper *pData, int32_t fid) {
-  STsdb *pTsdb = pSmaH->pTsdb;
-
-  char tSmaFile[TSDB_FILENAME_LEN] = {0};
-  snprintf(tSmaFile, TSDB_FILENAME_LEN, "v%df%d.rsma", REPO_ID(pTsdb), fid);
-  pSmaH->dFile.path = strdup(tSmaFile);
-
-  return TSDB_CODE_SUCCESS;
-}
-
-static int32_t tsdbInsertRSmaDataImpl(STsdb *pTsdb, char *msg) {
-  STsdbCfg *        pCfg = REPO_CFG(pTsdb);
-  STSmaDataWrapper *pData = (STSmaDataWrapper *)msg;
-  STSmaWriteH       tSmaH = {0};
-
-  tsdbInitTSmaWriteH(&tSmaH, pTsdb, pData);
-
-  if (pData->dataLen <= 0) {
-    TASSERT(0);
-    terrno = TSDB_CODE_INVALID_PARA;
-    return terrno;
-  }
-
-  // Step 1: Judge the storage level
-  int32_t storageLevel = tsdbGetSmaStorageLevel(pData->interval, pData->intervalUnit);
-  int32_t daysPerFile = storageLevel == SMA_STORAGE_LEVEL_TSDB ? SMA_STORAGE_TSDB_DAYS : pCfg->daysPerFile;
-
-  // Step 2: Set the DFile for storage of SMA index, and iterate/split the TSma data and store to B+Tree index file
-  //         - Set and open the DFile or the B+Tree file
-
-  int32_t fid = (int32_t)(TSDB_KEY_FID(pData->skey, daysPerFile, pCfg->precision));
-
-  // Save all the TSma data to one file
-  // TODO: tsdbStartTSmaCommit();
-  tsdbSetTSmaDataFile(&tSmaH, pData, storageLevel, fid);
-
-  tsdbInsertTSmaDataSection(&tSmaH, pData);
-  // TODO:tsdbEndTSmaCommit();
-
-  // reset the SSmaStat
-  tsdbResetExpiredWindow(pTsdb, SMA_ENV_STAT(pTsdb->pRSmaEnv), pData->indexUid, pData->skey);
-
-  return TSDB_CODE_SUCCESS;
-}
-
 /**
  * @brief
  *
@@ -934,6 +1087,15 @@ static int32_t tsdbGetTSmaDataImpl(STsdb *pTsdb, STSmaDataWrapper *pData, int64_
 #endif
 
 #if 1
+  int8_t smaStat = 0;
+  if (!tsdbSmaStatIsOK(pItem, &smaStat)) {  // TODO: multiple check for large scale sma query
+    tsdbUnRefSmaStat(pTsdb, SMA_ENV_STAT(pTsdb->pTSmaEnv));
+    terrno = TSDB_CODE_TDB_INVALID_SMA_STAT;
+    tsdbDebug("vgId:%d getTSmaDataImpl failed from index %" PRIi64 " since %s %" PRIi8, REPO_ID(pTsdb), indexUid,
+              tstrerror(terrno), smaStat);
+    return TSDB_CODE_FAILED;
+  }
+
   if (taosHashGet(pItem->expiredWindows, &querySKey, sizeof(TSKEY)) != NULL) {
     // TODO: mark this window as expired.
     tsdbDebug("vgId:%d skey %" PRIi64 " of window exists in expired window for index %" PRIi64, REPO_ID(pTsdb),
@@ -1086,6 +1248,20 @@ int32_t tsdbInsertRSmaData(STsdb *pTsdb, char *msg) {
   return code;
 }
 
+/**
+ * @brief Get tSma data
+ * 
+ * @param pTsdb 
+ * @param pData 
+ * @param indexUid 
+ * @param interval 
+ * @param intervalUnit 
+ * @param tableUid 
+ * @param colId 
+ * @param querySKey 
+ * @param nMaxResult 
+ * @return int32_t 
+ */
 int32_t tsdbGetTSmaData(STsdb *pTsdb, STSmaDataWrapper *pData, int64_t indexUid, int64_t interval, int8_t intervalUnit,
                         tb_uid_t tableUid, col_id_t colId, TSKEY querySKey, int32_t nMaxResult) {
   int32_t code = TSDB_CODE_SUCCESS;
@@ -1094,4 +1270,19 @@ int32_t tsdbGetTSmaData(STsdb *pTsdb, STSmaDataWrapper *pData, int64_t indexUid,
     tsdbWarn("vgId:%d get tSma data failed since %s", REPO_ID(pTsdb), tstrerror(terrno));
   }
   return code;
+}
+
+/**
+ * @brief Drop tSma Data and caches
+ * 
+ * @param pTsdb 
+ * @param msg 
+ * @return int32_t 
+ */
+int32_t tsdbDropTSmaData(STsdb *pTsdb, int64_t indexUid) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  if ((code = tsdbDropTSmaDataImpl(pTsdb, indexUid)) < 0) {
+    tsdbWarn("vgId:%d drop tSma data failed since %s", REPO_ID(pTsdb), tstrerror(terrno));
+  }
+  return code;
 }
\ No newline at end of file
diff --git a/source/dnode/vnode/src/vnd/vnodeWrite.c b/source/dnode/vnode/src/vnd/vnodeWrite.c
index ade9adb1e1..f8234de813 100644
--- a/source/dnode/vnode/src/vnd/vnodeWrite.c
+++ b/source/dnode/vnode/src/vnd/vnodeWrite.c
@@ -199,15 +199,23 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
         return -1;
       }
 
-      if (metaDropTSma(pVnode->pMeta, vDropSmaReq.indexName) < 0) {
-        // TODO: handle error
-        return -1;
-      }
       // TODO: send msg to stream computing to drop tSma
       // if ((send msg to stream computing) < 0) {
       //   tdDestroyTSma(&vCreateSmaReq);
       //   return -1;
       // }
+      // 
+
+      if (metaDropTSma(pVnode->pMeta, vDropSmaReq.indexUid) < 0) {
+        // TODO: handle error
+        return -1;
+      }
+
+      if(tsdbDropTSmaData(pVnode->pTsdb, vDropSmaReq.indexUid) < 0) {
+        // TODO: handle error
+        return -1;
+      }
+
       // TODO: return directly or go on follow steps?
     } break;
     default:
diff --git a/source/dnode/vnode/test/tsdbSmaTest.cpp b/source/dnode/vnode/test/tsdbSmaTest.cpp
index 3c51ad5d71..3fa5799f54 100644
--- a/source/dnode/vnode/test/tsdbSmaTest.cpp
+++ b/source/dnode/vnode/test/tsdbSmaTest.cpp
@@ -272,8 +272,8 @@ TEST(testCase, tSma_metaDB_Put_Get_Del_Test) {
   taosArrayDestroy(pUids);
 
   // resource release
-  metaRemoveSmaFromDb(pMeta, smaIndexName1);
-  metaRemoveSmaFromDb(pMeta, smaIndexName2);
+  metaRemoveSmaFromDb(pMeta, indexUid1);
+  metaRemoveSmaFromDb(pMeta, indexUid2);
 
   tdDestroyTSma(&tSma);
   metaClose(pMeta);
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index b7ab007cf5..55fef59ae1 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -332,8 +332,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TDB_MESSED_MSG,               "TSDB messed message")
 TAOS_DEFINE_ERROR(TSDB_CODE_TDB_IVLD_TAG_VAL,             "TSDB invalid tag value")
 TAOS_DEFINE_ERROR(TSDB_CODE_TDB_NO_CACHE_LAST_ROW,        "TSDB no cache last row data")
 TAOS_DEFINE_ERROR(TSDB_CODE_TDB_TABLE_RECREATED,          "Table re-created")
-TAOS_DEFINE_ERROR(TSDB_CODE_TDB_NO_SMA_INDEX_IN_META,     "No sma index in meta")
 TAOS_DEFINE_ERROR(TSDB_CODE_TDB_TDB_ENV_OPEN_ERROR,       "TDB env open error")
+TAOS_DEFINE_ERROR(TSDB_CODE_TDB_NO_SMA_INDEX_IN_META,     "No sma index in meta")
+TAOS_DEFINE_ERROR(TSDB_CODE_TDB_INVALID_SMA_STAT,         "Invalid sma state")
 
 // query
 TAOS_DEFINE_ERROR(TSDB_CODE_QRY_INVALID_QHANDLE,          "Invalid handle")