diff --git a/deps/oblib/src/lib/allocator/ob_slice_alloc.h b/deps/oblib/src/lib/allocator/ob_slice_alloc.h
index 87b0cc2c2f..613e88dafc 100644
--- a/deps/oblib/src/lib/allocator/ob_slice_alloc.h
+++ b/deps/oblib/src/lib/allocator/ob_slice_alloc.h
@@ -257,6 +257,33 @@ private:
   FList flist_ CACHE_ALIGNED;
 };
 
+
+/******************************************** debug code *********************************************/
+
+#ifdef ENABLE_DEBUG_LOG
+#define OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+// #define OB_RECORD_ALL_LBT_IN_THIS_ALLOCATOR
+#endif
+
+#ifdef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+#define OB_SLICE_LBT_BUFF_LENGTH 128
+#endif
+
+#ifdef OB_RECORD_ALL_LBT_IN_THIS_ALLOCATOR
+#define GEN_RECORD_ALL_LBT_IN_THIS_ALLOCATOR_CODE                            \
+  do {                                                                       \
+    if (is_leak_debug_ && OB_NOT_NULL(ret)) {                                \
+      void *slice_ptr = (void *)(ret + 1);                                   \
+      char *lbt_buf = (char *)slice_ptr + isize_ - OB_SLICE_LBT_BUFF_LENGTH; \
+      lbt(lbt_buf, OB_SLICE_LBT_BUFF_LENGTH);                                \
+    }                                                                        \
+  } while (0);
+#else
+#define GEN_RECORD_ALL_LBT_IN_THIS_ALLOCATOR_CODE
+#endif
+
+/******************************************** debug code *********************************************/
+
 class ObSliceAlloc
 {
 public:
@@ -354,6 +381,7 @@ public:
       }
     }
 
+    GEN_RECORD_ALL_LBT_IN_THIS_ALLOCATOR_CODE
     return NULL == ret? NULL: (void*)(ret + 1);
 #endif
   }
@@ -462,7 +490,42 @@ protected:
   Sync blk_ref_[MAX_REF_NUM];
   BlockAlloc &blk_alloc_;
   void* tmallocator_;
+
+/******************************************** debug code *********************************************/
+
+#ifdef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+
+public:
+  // use this function after initiating slice allocator
+  void enable_leak_debug()
+  {
+    new (this) ObSliceAlloc(isize_ + 128, attr_, bsize_, blk_alloc_, NULL);
+    is_leak_debug_ = true;
+    LIB_LOG(INFO, "leak debug mode! allocate extra 128 bytes memory for lbt record", K(is_leak_debug_));
+  }
+
+  void *alloc(const bool record_alloc_lbt)
+  {
+    void *ret = alloc();
+    if (record_alloc_lbt && is_leak_debug_ && OB_NOT_NULL(ret)) {
+      char *lbt_buf = (char *)ret + isize_ - OB_SLICE_LBT_BUFF_LENGTH;
+      lbt(lbt_buf, OB_SLICE_LBT_BUFF_LENGTH);
+    }
+    return ret;
+  }
+
+private:
+  bool is_leak_debug_ = false;
+
+#endif
+
+#undef OB_SLICE_LBT_BUFF_LENGTH
+#undef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+/******************************************** debug code *********************************************/
+
 };
+
+
 }; // end namespace common
 }; // end namespace oceanbase
 #endif /* OCEANBASE_ALLOCATOR_OB_SLICE_ALLOC_H_ */
diff --git a/src/storage/tx/ob_tx_data_define.cpp b/src/storage/tx/ob_tx_data_define.cpp
index 4ddb41d0a2..68a6ab52ea 100644
--- a/src/storage/tx/ob_tx_data_define.cpp
+++ b/src/storage/tx/ob_tx_data_define.cpp
@@ -113,7 +113,11 @@ int ObUndoStatusList::deserialize_(const char *buf,
     // allcate new undo status node if needed
     if (OB_ISNULL(cur_node) || cur_node->size_ >= TX_DATA_UNDO_ACT_MAX_NUM_PER_NODE) {
       void *undo_node_buf = nullptr;
+#ifdef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+      if (OB_ISNULL(undo_node_buf = slice_allocator.alloc(true /*record_alloc_lbt*/))) {
+#else
       if (OB_ISNULL(undo_node_buf = slice_allocator.alloc())) {
+#endif
         ret = OB_ALLOCATE_MEMORY_FAILED;
         STORAGE_LOG(WARN, "allocate memory when deserialize ObTxData failed.", KR(ret));
       } else {
diff --git a/src/storage/tx_table/ob_tx_data_table.cpp b/src/storage/tx_table/ob_tx_data_table.cpp
index e7ec59ccc4..c1856f7008 100644
--- a/src/storage/tx_table/ob_tx_data_table.cpp
+++ b/src/storage/tx_table/ob_tx_data_table.cpp
@@ -36,6 +36,14 @@ using namespace oceanbase::share;
 namespace storage
 {
 
+#ifdef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+#define TX_DATA_MEM_LEAK_DEBUG_CODE slice_allocator_.enable_leak_debug();
+#else
+#define TX_DATA_MEM_LEAK_DEBUG_CODE
+#endif
+
+
+
 int ObTxDataTable::init(ObLS *ls, ObTxCtxTable *tx_ctx_table)
 {
   int ret = OB_SUCCESS;
@@ -58,6 +66,7 @@ int ObTxDataTable::init(ObLS *ls, ObTxCtxTable *tx_ctx_table)
     STORAGE_LOG(WARN, "init tx data read ctx failed.", KR(ret), K(tablet_id_));
   } else {
     slice_allocator_.set_nway(ObTxDataTable::TX_DATA_MAX_CONCURRENCY);
+    TX_DATA_MEM_LEAK_DEBUG_CODE
 
     ls_ = ls;
     memtable_mgr_ = static_cast<ObTxDataMemtableMgr *>(memtable_mgr_handle.get_memtable_mgr());
@@ -318,7 +327,11 @@ int ObTxDataTable::alloc_undo_status_node(ObUndoStatusNode *&undo_status_node)
 {
   int ret = OB_SUCCESS;
   void *slice_ptr = nullptr;
+#ifdef OB_ENABLE_SLICE_ALLOC_LEAK_DEBUG
+  if (OB_ISNULL(slice_ptr = slice_allocator_.alloc(true /*record_alloc_lbt*/))) {
+#else
   if (OB_ISNULL(slice_ptr = slice_allocator_.alloc())) {
+#endif
     ret = OB_ALLOCATE_MEMORY_FAILED;
     STORAGE_LOG(WARN, "allocate memory fail.", KR(ret), KP(this), K(tablet_id_));
   } else {