diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 0c9c7b47934f41cfaabd31e803b5380a66ca6980..3ee706cd3982215d4a1711fec563f38164fd4cfe 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -341,6 +341,8 @@ int32_t tqNextBlockInWal(STqReader* pReader) {
 
       SDecoder decoder = {0};
       tDecoderInit(&decoder, pBody, bodyLen);
+      taosArrayDestroy(pReader->submit.aSubmitTbData);
+
       if (tDecodeSubmitReq(&decoder, &pReader->submit) < 0) {
         tDecoderClear(&decoder);
         tqError("decode wal file error, msgLen:%d, ver:%"PRId64, bodyLen, ver);