diff --git a/kernel/src/mm/los_membox.c b/kernel/src/mm/los_membox.c
index 7a167cd7..c37c5ee7 100644
--- a/kernel/src/mm/los_membox.c
+++ b/kernel/src/mm/los_membox.c
@@ -130,10 +130,6 @@ UINT32 LOS_MemboxInit(VOID *pool, UINT32 poolSize, UINT32 blkSize)
 
     MEMBOX_LOCK(intSave);
     boxInfo->uwBlkSize = LOS_MEMBOX_ALIGNED(blkSize + OS_MEMBOX_NODE_HEAD_SIZE);
-    if (boxInfo->uwBlkSize == 0) {
-        MEMBOX_UNLOCK(intSave);
-        return LOS_NOK;
-    }
     boxInfo->uwBlkNum = (poolSize - sizeof(LOS_MEMBOX_INFO)) / boxInfo->uwBlkSize;
     boxInfo->uwBlkCnt = 0;
     if (boxInfo->uwBlkNum == 0) {
diff --git a/kernel/src/mm/los_memory.c b/kernel/src/mm/los_memory.c
index 998b080f..22f3daad 100644
--- a/kernel/src/mm/los_memory.c
+++ b/kernel/src/mm/los_memory.c
@@ -964,10 +964,6 @@ STATIC INLINE VOID *OsMemAlloc(struct OsMemPoolHead *pool, UINT32 size, UINT32 i
 #endif
 
     UINT32 allocSize = OS_MEM_ALIGN(size + OS_MEM_NODE_HEAD_SIZE, OS_MEM_ALIGN_SIZE);
-    if (allocSize == 0) {
-        return NULL;
-    }
-
 #if OS_MEM_EXPAND_ENABLE
 retry:
 #endif
@@ -1558,13 +1554,13 @@ STATIC INLINE VOID OsMemMagicCheckPrint(struct OsMemNodeHead **tmpNode)
 
 STATIC UINT32 OsMemAddrValidCheckPrint(const VOID *pool, struct OsMemFreeNodeHead **tmpNode)
 {
-    if (!OsMemAddrValidCheck(pool, (*tmpNode)->prev)) {
+    if (((*tmpNode)->prev != NULL) && !OsMemAddrValidCheck(pool, (*tmpNode)->prev)) {
         PRINT_ERR("[%s], %d, memory check error!\n"
                   " freeNode.prev: 0x%x is out of legal mem range\n",
                   __FUNCTION__, __LINE__, (*tmpNode)->prev);
         return LOS_NOK;
     }
-    if (!OsMemAddrValidCheck(pool, (*tmpNode)->next)) {
+    if (((*tmpNode)->next != NULL) && !OsMemAddrValidCheck(pool, (*tmpNode)->next)) {
         PRINT_ERR("[%s], %d, memory check error!\n"
                   " freeNode.next: 0x%x is out of legal mem range\n",
                   __FUNCTION__, __LINE__, (*tmpNode)->next);