diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index 0f5e6733ed0be35742363bfd38a89de972722aa3..f5715866edbf8bfe111585c31a215bdec7cd404e 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -203,6 +203,34 @@ int tdbBtCursorInsert(SBtCursor *pCur, const void *pKey, int kLen, const void *p
   return 0;
 }
 
+int tdbBtreeGet(SBTree *pBt, const void *pKey, int kLen, void **ppVal, int *vLen) {
+  SBtCursor    btc;
+  SCell       *pCell;
+  int          cret;
+  SCellDecoder cd;
+
+  tdbBtreeCursor(&btc, pBt);
+
+  tdbBtCursorMoveTo(&btc, pKey, kLen, &cret);
+
+  if (cret) {
+    return cret;
+  }
+
+  pCell = tdbPageGetCell(btc.pPage, btc.idx);
+  tdbBtreeDecodeCell(btc.pPage, pCell, &cd);
+
+  *vLen = cd.vLen;
+  // TODO: here may have memory leak
+  *ppVal = realloc(*ppVal, *vLen);
+  if (*ppVal == NULL) {
+    return -1;
+  }
+
+  memcpy(*ppVal, cd.pVal, cd.vLen);
+  return 0;
+}
+
 static int tdbBtCursorMoveToChild(SBtCursor *pCur, SPgno pgno) {
   int ret;
 
diff --git a/source/libs/tdb/src/db/tdbDb.c b/source/libs/tdb/src/db/tdbDb.c
index 27cbaeaa01e6a370abbac4b13f504416b412279f..2ba9daaa4a966f32333c53f4a301802e30d4cd4c 100644
--- a/source/libs/tdb/src/db/tdbDb.c
+++ b/source/libs/tdb/src/db/tdbDb.c
@@ -88,7 +88,6 @@ int tdbDbInsert(STDb *pDb, const void *pKey, int keyLen, const void *pVal, int v
   return 0;
 }
 
-int tdbDbGet(STDb *pDb, const void *pKey, int kLen, void *pVal, int *vLen) {
-  // TODO
-  return 0;
+int tdbDbGet(STDb *pDb, const void *pKey, int kLen, void **ppVal, int *vLen) {
+  return tdbBtreeGet(pDb->pBt, pKey, kLen, ppVal, vLen);
 }
\ No newline at end of file
diff --git a/source/libs/tdb/src/inc/tdbBtree.h b/source/libs/tdb/src/inc/tdbBtree.h
index c1fe77c22ea18ad0720f74659f7eac46259c74f3..a0b054a6a8b14c2b26280f31d18ca04ba8600b96 100644
--- a/source/libs/tdb/src/inc/tdbBtree.h
+++ b/source/libs/tdb/src/inc/tdbBtree.h
@@ -37,6 +37,7 @@ int tdbBtreeOpen(int keyLen, int valLen, SPager *pFile, FKeyComparator kcmpr, SB
 int tdbBtreeClose(SBTree *pBt);
 int tdbBtreeCursor(SBtCursor *pCur, SBTree *pBt);
 int tdbBtCursorInsert(SBtCursor *pCur, const void *pKey, int kLen, const void *pVal, int vLen);
+int tdbBtreeGet(SBTree *pBt, const void *pKey, int kLen, void **ppVal, int *vLen);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/tdb/src/inc/tdbDb.h b/source/libs/tdb/src/inc/tdbDb.h
index fdf4c4aca59aaa4ed0a9945d15d5c1ee6dc01c7b..6a9d653eac9f128dd9f141ccb1a44bd97daae9bf 100644
--- a/source/libs/tdb/src/inc/tdbDb.h
+++ b/source/libs/tdb/src/inc/tdbDb.h
@@ -26,7 +26,7 @@ int tdbDbOpen(const char *fname, int keyLen, int valLen, FKeyComparator keyCmprF
 int tdbDbClose(STDb *pDb);
 int tdbDbDrop(STDb *pDb);
 int tdbDbInsert(STDb *pDb, const void *pKey, int keyLen, const void *pVal, int valLen);
-int tdbDbGet(STDb *pDb, const void *pKey, int kLen, void *pVal, int *vLen);
+int tdbDbGet(STDb *pDb, const void *pKey, int kLen, void **ppVal, int *vLen);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/tdb/test/tdbTest.cpp b/source/libs/tdb/test/tdbTest.cpp
index c5a2787aaf26f7e5765ccb80c86e9f1553c2a178..3d06d568e41847145382625ec92bce728218493f 100644
--- a/source/libs/tdb/test/tdbTest.cpp
+++ b/source/libs/tdb/test/tdbTest.cpp
@@ -37,7 +37,7 @@ TEST(tdb_test, simple_test) {
         sprintf(key, "key%d", i);
         sprintf(val, "value%d", i);
 
-        ret = tdbDbGet(pDb, key, strlen(key), pVal, &vLen);
+        ret = tdbDbGet(pDb, key, strlen(key), &pVal, &vLen);
         GTEST_ASSERT_EQ(ret, 0);
 
         GTEST_ASSERT_EQ(vLen, strlen(val));