diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a05cc0224a1a4c9d82579721cd7870ec81766686..326f00dbbd5c4565c03b3c8b253d511d42b7668c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -12,7 +12,6 @@ ADD_SUBDIRECTORY(client)
 ADD_SUBDIRECTORY(query)
 ADD_SUBDIRECTORY(kit)
 ADD_SUBDIRECTORY(plugins)
-ADD_SUBDIRECTORY(sdb)
 ADD_SUBDIRECTORY(mnode)
 ADD_SUBDIRECTORY(vnode)
 ADD_SUBDIRECTORY(dnode)
diff --git a/src/dnode/CMakeLists.txt b/src/dnode/CMakeLists.txt
index 298eb6110c8dab7ac34a24446d851b37a6b5dace..d85782b463f4ca579c9874ee1050593ff01f40ca 100644
--- a/src/dnode/CMakeLists.txt
+++ b/src/dnode/CMakeLists.txt
@@ -13,7 +13,7 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   AUX_SOURCE_DIRECTORY(src SRC)
 
   ADD_EXECUTABLE(taosd ${SRC})
-  TARGET_LINK_LIBRARIES(taosd mnode sdb taos_static monitor http tsdb)
+  TARGET_LINK_LIBRARIES(taosd mnode taos_static monitor http tsdb)
 
   #IF (TD_CLUSTER)
   #  TARGET_LINK_LIBRARIES(taosd dcluster)
diff --git a/src/mnode/CMakeLists.txt b/src/mnode/CMakeLists.txt
index 5bf4cfd604c81f14a95129bcd6887d2ca2904b4f..bacd7497ad5832b963db7d188550e4ce560829c7 100644
--- a/src/mnode/CMakeLists.txt
+++ b/src/mnode/CMakeLists.txt
@@ -13,7 +13,7 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   AUX_SOURCE_DIRECTORY(src SRC)
 
   ADD_LIBRARY(mnode ${SRC})
-  TARGET_LINK_LIBRARIES(mnode trpc tutil sdb pthread)
+  TARGET_LINK_LIBRARIES(mnode trpc tutil pthread)
 
   IF (TD_CLUSTER)
     TARGET_LINK_LIBRARIES(mnode)
diff --git a/src/sdb/inc/sdbint.h b/src/mnode/inc/mgmtSdb.h
similarity index 100%
rename from src/sdb/inc/sdbint.h
rename to src/mnode/inc/mgmtSdb.h
diff --git a/src/sdb/src/sdbEngine.c b/src/mnode/src/mgmtSdb.c
similarity index 97%
rename from src/sdb/src/sdbEngine.c
rename to src/mnode/src/mgmtSdb.c
index fbc41089d1c9917aa5adae26b0052450a44e844d..04802e77da0190f76f72dd9aecb7b04405211fee 100644
--- a/src/sdb/src/sdbEngine.c
+++ b/src/mnode/src/mgmtSdb.c
@@ -13,11 +13,11 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _DEFAULT_SOURCE
 #include "os.h"
-
 #include "sdb.h"
-#include "sdbint.h"
 #include "tutil.h"
+#include "mgmtSdb.h"
 
 #define abs(x) (((x) < 0) ? -(x) : (x))
 
@@ -1015,3 +1015,46 @@ void *sdbFetchRow(void *handle, void *pNode, void **ppRow) {
 int64_t sdbGetId(void *handle) { return ((SSdbTable *)handle)->id; }
 
 int64_t sdbGetNumOfRows(void *handle) { return ((SSdbTable *)handle)->numOfRows; }
+
+
+int32_t (*mpeerInitMnodesFp)(char *directory) = NULL;
+void    (*mpeerCleanUpMnodesFp)() = NULL;
+int32_t (*mpeerForwardRequestFp)(SSdbTable *pTable, char type, void *cont, int32_t contLen) = NULL;
+
+char *sdbStatusStr[] = {
+  "offline",
+  "unsynced",
+  "syncing",
+  "serving",
+  "null"
+};
+
+char *sdbRoleStr[] = {
+  "unauthed",
+  "undecided",
+  "master",
+  "slave",
+  "null"
+};
+
+int32_t sdbForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int32_t dataLen) {
+  if (mpeerForwardRequestFp) {
+    return mpeerForwardRequestFp(pTable, type, data, dataLen);
+  } else {
+    return 0;
+  }
+}
+
+int32_t sdbInitPeers(char *directory) {
+  if (mpeerInitMnodesFp) {
+    return (*mpeerInitMnodesFp)(directory);
+  } else {
+    return 0;
+  }
+}
+
+void sdbCleanUpPeers() {
+  if (mpeerCleanUpMnodesFp) {
+    (*mpeerCleanUpMnodesFp)();
+  }
+}
diff --git a/src/sdb/CMakeLists.txt b/src/sdb/CMakeLists.txt
deleted file mode 100644
index 47ea6e15b8cf5d8ba6f5d24c562e2b133f58f5d0..0000000000000000000000000000000000000000
--- a/src/sdb/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
-PROJECT(TDengine)
-
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
-INCLUDE_DIRECTORIES(inc)
-
-IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-    AUX_SOURCE_DIRECTORY(src SRC)
-    ADD_LIBRARY(sdb ${SRC})
-    TARGET_LINK_LIBRARIES(sdb trpc)
-    IF (TD_CLUSTER)
-        TARGET_LINK_LIBRARIES(sdb)
-    ENDIF()
-ENDIF ()
diff --git a/src/sdb/src/sdbstr.c b/src/sdb/src/sdbstr.c
deleted file mode 100644
index 59c01eb15a95a7354b5f37acb1d521a5e89c100d..0000000000000000000000000000000000000000
--- a/src/sdb/src/sdbstr.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#define _DEFAULT_SOURCE
-#include "sdbint.h"
-
-int32_t (*mpeerInitMnodesFp)(char *directory) = NULL;
-void    (*mpeerCleanUpMnodesFp)() = NULL;
-int32_t (*mpeerForwardRequestFp)(SSdbTable *pTable, char type, void *cont, int32_t contLen) = NULL;
-
-char *sdbStatusStr[] = {
-  "offline",
-  "unsynced",
-  "syncing",
-  "serving",
-  "null"
-};
-
-char *sdbRoleStr[] = {
-  "unauthed",
-  "undecided",
-  "master",
-  "slave",
-  "null"
-};
-
-int32_t sdbForwardDbReqToPeer(SSdbTable *pTable, char type, char *data, int32_t dataLen) {
-  if (mpeerForwardRequestFp) {
-    return mpeerForwardRequestFp(pTable, type, data, dataLen);
-  } else {
-    return 0;
-  }
-}
-
-int32_t sdbInitPeers(char *directory) {
-  if (mpeerInitMnodesFp) {
-    return (*mpeerInitMnodesFp)(directory);
-  } else {
-    return 0;
-  }
-}
-
-void sdbCleanUpPeers() {
-  if (mpeerCleanUpMnodesFp) {
-    (*mpeerCleanUpMnodesFp)();
-  }
-}
diff --git a/src/sdb/inc/hashint.h b/src/util/inc/hashint.h
similarity index 100%
rename from src/sdb/inc/hashint.h
rename to src/util/inc/hashint.h
diff --git a/src/sdb/inc/hashstr.h b/src/util/inc/hashstr.h
similarity index 100%
rename from src/sdb/inc/hashstr.h
rename to src/util/inc/hashstr.h
diff --git a/src/sdb/src/hashint.c b/src/util/src/hashint.c
similarity index 100%
rename from src/sdb/src/hashint.c
rename to src/util/src/hashint.c
diff --git a/src/sdb/src/hashstr.c b/src/util/src/hashstr.c
similarity index 100%
rename from src/sdb/src/hashstr.c
rename to src/util/src/hashstr.c