diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 94483b8a6449bcee6230d077ab5bdeb68e0a7b2a..44a3f27983a34f5fe61ba9f854b1973552c7556b 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -5954,6 +5954,7 @@ int32_t tDecodeSMqDataRsp(SDecoder *pDecoder, SMqDataRsp *pRsp) {
         if (pSW == NULL) return -1;
         if (tDecodeSSchemaWrapper(pDecoder, pSW) < 0) return -1;
         taosArrayPush(pRsp->blockSchema, &pSW);
+        taosMemoryFree(pSW);
       }
 
       if (pRsp->withTbName) {