diff --git a/libs/tendermint/mempool/clist_mempool.go b/libs/tendermint/mempool/clist_mempool.go
index 39cf4078e9..39e409536d 100644
--- a/libs/tendermint/mempool/clist_mempool.go
+++ b/libs/tendermint/mempool/clist_mempool.go
@@ -528,7 +528,9 @@ func (mem *CListMempool) addPendingTx(memTx *mempoolTx) error {
 	if ok {
 		expectedNonce = pendingNonce + 1
 	}
-	if memTx.realTx.GetNonce() == expectedNonce {
+	txNonce := memTx.realTx.GetNonce()
+	// cosmos tx does not support pending pool, so here must check whether txNonce is 0
+	if txNonce == 0 || txNonce == expectedNonce {
 		err := mem.addTx(memTx)
 		if err == nil {
 			go mem.consumePendingTx(memTx.from, memTx.realTx.GetNonce()+1)