diff --git a/source/dnode/mnode/impl/src/mndConfig.c b/source/dnode/mnode/impl/src/mndConfig.c
index 09754b8344..ba53648823 100644
--- a/source/dnode/mnode/impl/src/mndConfig.c
+++ b/source/dnode/mnode/impl/src/mndConfig.c
@@ -102,9 +102,7 @@ SSdbRaw *mnCfgActionEncode(SConfigObj *obj) {
       break;
     case CFG_DTYPE_FLOAT:
     case CFG_DTYPE_DOUBLE:
-      (void)sprintf(buf, "%f", obj->fval);
-      SDB_SET_INT32(pRaw, dataPos, strlen(buf), _OVER)
-      SDB_SET_BINARY(pRaw, dataPos, buf, strlen(buf), _OVER)
+      SDB_SET_FLOAT(pRaw, dataPos, obj->fval, _OVER)
       break;
     case CFG_DTYPE_STRING:
     case CFG_DTYPE_DIR:
@@ -172,11 +170,7 @@ SSdbRow *mndCfgActionDecode(SSdbRaw *pRaw) {
       break;
     case CFG_DTYPE_FLOAT:
     case CFG_DTYPE_DOUBLE:
-      SDB_GET_INT32(pRaw, dataPos, &len, _OVER)
-      char *buf = taosMemoryMalloc(len + 1);
-      SDB_GET_BINARY(pRaw, dataPos, buf, len, _OVER)
-      obj->fval = atof(buf);
-      taosMemoryFree(buf);
+      SDB_GET_FLOAT(pRaw, dataPos, &obj->fval, _OVER)
       break;
     case CFG_DTYPE_STRING:
     case CFG_DTYPE_DIR:
diff --git a/source/dnode/mnode/sdb/inc/sdb.h b/source/dnode/mnode/sdb/inc/sdb.h
index 19a9343cea..eff26bf412 100644
--- a/source/dnode/mnode/sdb/inc/sdb.h
+++ b/source/dnode/mnode/sdb/inc/sdb.h
@@ -56,6 +56,7 @@ extern "C" {
   }
 
 #define SDB_GET_INT64(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt64, int64_t)
+#define SDB_GET_FLOAT(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawFloat, float)
 #define SDB_GET_INT32(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt32, int32_t)
 #define SDB_GET_INT16(pData, dataPos, val, pos) SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt16, int16_t)
 #define SDB_GET_INT8(pData, dataPos, val, pos)  SDB_GET_VAL(pData, dataPos, val, pos, sdbGetRawInt8, int8_t)
@@ -82,6 +83,7 @@ extern "C" {
 #define SDB_SET_INT16(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt16, int16_t)
 #define SDB_SET_INT8(pRaw, dataPos, val, pos)  SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawInt8, int8_t)
 #define SDB_SET_UINT8(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawUInt8, uint8_t)
+#define SDB_SET_FLOAT(pRaw, dataPos, val, pos) SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawFloat, float)
 #define SDB_SET_BOOL(pRaw, dataPos, val, pos)  SDB_SET_VAL(pRaw, dataPos, val, pos, sdbSetRawBool, bool)
 
 #define SDB_SET_BINARY(pRaw, dataPos, val, valLen, pos)              \
@@ -425,6 +427,7 @@ int32_t  sdbSetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool val);
 int32_t  sdbSetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t val);
 int32_t  sdbSetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t val);
 int32_t  sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val);
+int32_t  sdbSetRawFloat(SSdbRaw *pRaw, int32_t dataPos, float val);
 int32_t  sdbSetRawBinary(SSdbRaw *pRaw, int32_t dataPos, const char *pVal, int32_t valLen);
 int32_t  sdbSetRawDataLen(SSdbRaw *pRaw, int32_t dataLen);
 int32_t  sdbSetRawStatus(SSdbRaw *pRaw, ESdbStatus status);
@@ -434,6 +437,7 @@ int32_t  sdbGetRawBool(SSdbRaw *pRaw, int32_t dataPos, bool *val);
 int32_t  sdbGetRawInt16(SSdbRaw *pRaw, int32_t dataPos, int16_t *val);
 int32_t  sdbGetRawInt32(SSdbRaw *pRaw, int32_t dataPos, int32_t *val);
 int32_t  sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val);
+int32_t  sdbGetRawFloat(SSdbRaw *pRaw, int32_t dataPos, float *val);
 int32_t  sdbGetRawBinary(SSdbRaw *pRaw, int32_t dataPos, char *pVal, int32_t valLen);
 int32_t  sdbGetRawSoftVer(SSdbRaw *pRaw, int8_t *sver);
 int32_t  sdbGetRawTotalSize(SSdbRaw *pRaw);
diff --git a/source/dnode/mnode/sdb/src/sdbRaw.c b/source/dnode/mnode/sdb/src/sdbRaw.c
index c71e415d1b..37131300c6 100644
--- a/source/dnode/mnode/sdb/src/sdbRaw.c
+++ b/source/dnode/mnode/sdb/src/sdbRaw.c
@@ -140,6 +140,22 @@ int32_t sdbSetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t val) {
   return 0;
 }
 
+int32_t sdbSetRawFloat(SSdbRaw *pRaw, int32_t dataPos, float val) {
+  int32_t code = 0;
+  if (pRaw == NULL) {
+    code = TSDB_CODE_INVALID_PTR;
+    TAOS_RETURN(code);
+  }
+
+  if (dataPos + sizeof(float) > pRaw->dataLen) {
+    code = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    TAOS_RETURN(code);
+  }
+
+  *(int64_t *)(pRaw->pData + dataPos) = val;
+  return 0;
+}
+
 int32_t sdbSetRawBinary(SSdbRaw *pRaw, int32_t dataPos, const char *pVal, int32_t valLen) {
   int32_t code = 0;
   if (pRaw == NULL) {
@@ -285,6 +301,22 @@ int32_t sdbGetRawInt64(SSdbRaw *pRaw, int32_t dataPos, int64_t *val) {
   return 0;
 }
 
+int32_t sdbGetRawFloat(SSdbRaw *pRaw, int32_t dataPos, float *val) {
+  int32_t code = 0;
+  if (pRaw == NULL) {
+    code = TSDB_CODE_INVALID_PTR;
+    TAOS_RETURN(code);
+  }
+
+  if (dataPos + sizeof(float) > pRaw->dataLen) {
+    code = TSDB_CODE_SDB_INVALID_DATA_LEN;
+    TAOS_RETURN(code);
+  }
+
+  *val = *(int64_t *)(pRaw->pData + dataPos);
+  return 0;
+}
+
 int32_t sdbGetRawBinary(SSdbRaw *pRaw, int32_t dataPos, char *pVal, int32_t valLen) {
   int32_t code = 0;
   if (pRaw == NULL) {