diff --git a/pkg/order/mempool/mempool_impl.go b/pkg/order/mempool/mempool_impl.go
index 755c5c2..fbbb7bb 100644
--- a/pkg/order/mempool/mempool_impl.go
+++ b/pkg/order/mempool/mempool_impl.go
@@ -146,10 +146,6 @@ func (mpi *mempoolImpl) generateBlock() (*raftproto.RequestBatch, error) {
 		if txSeq >= 1 {
 			_, seenPrevious = mpi.txStore.batchedTxs[orderedIndexKey{account: tx.account, nonce: txSeq - 1}]
 		}
-		if txSeq == 3 {
-			mpi.logger.Infof("seenPrevious %v and commitNonce is %d", seenPrevious, commitNonce)
-			mpi.logger.Infof("batched txs is %v", mpi.txStore.batchedTxs)
-		}
 		// include transaction if it's "next" for given account or
 		// we've already sent its ancestor to Consensus
 		if seenPrevious || (txSeq == commitNonce) {
@@ -303,8 +299,7 @@ func (mpi *mempoolImpl) GetTimeoutTransactions(rebroadcastDuration time.Duration
 	})
 	for _, item := range timeoutItems {
 		// update the liveTime of timeout txs
-		item.timestamp = currentTime
-		mpi.txStore.ttlIndex.items[makeAccountNonceKey(item.account, item.nonce)] = currentTime
+		mpi.txStore.ttlIndex.updateByTtlKey(item, currentTime)
 	}
 	// shard txList into fixed size in case txList is too large to broadcast one time
 	return mpi.shardTxList(timeoutItems, mpi.txSliceSize)
diff --git a/pkg/order/mempool/mempool_test.go b/pkg/order/mempool/mempool_test.go
index b1993fc..ef512bd 100644
--- a/pkg/order/mempool/mempool_test.go
+++ b/pkg/order/mempool/mempool_test.go
@@ -1,7 +1,7 @@
 package mempool
 
 import (
-	"fmt"
+	"math"
 	"testing"
 	"time"
 
@@ -19,12 +19,6 @@ func TestGetBlock(t *testing.T) {
 	tx2 := constructTx(uint64(2), &privKey1)
 	tx3 := constructTx(uint64(2), &privKey2)
 	tx4 := constructTx(uint64(4), &privKey2)
-	from1, err := privKey1.PublicKey().Address()
-	ast.Nil(err)
-	fmt.Printf("from 1 is %s\n", from1)
-	from2, err := privKey2.PublicKey().Address()
-	ast.Nil(err)
-	fmt.Printf("from 2 is %s\n", from2)
 	var txList []*pb.Transaction
 	txList = append(txList, tx1, tx2, tx3, tx4)
 	// mock follower
@@ -290,6 +284,7 @@ func TestGetTimeoutTransaction(t *testing.T) {
 	ast := assert.New(t)
 	mpi, _ := mockMempoolImpl()
 	mpi.txSliceSize = 3
+	allTxHashes := make([]*types.Hash, 0)
 
 	txList := make([]*pb.Transaction, 0)
 	privKey1 := genPrivKey()
@@ -301,6 +296,7 @@ func TestGetTimeoutTransaction(t *testing.T) {
 		tx1 := constructTx(i, &privKey1)
 		tx2 := constructTx(i, &privKey2)
 		txList = append(txList, tx1, tx2)
+		allTxHashes = append(allTxHashes, tx1.Hash(), tx2.Hash())
 	}
 	batch := mpi.ProcessTransactions(txList, true, true)
 	ast.Nil(batch)
@@ -312,6 +308,7 @@ func TestGetTimeoutTransaction(t *testing.T) {
 		tx1 := constructTx(i, &privKey1)
 		tx2 := constructTx(i, &privKey2)
 		txList = append(txList, tx1, tx2)
+		allTxHashes = append(allTxHashes, tx1.Hash(), tx2.Hash())
 	}
 	batch = mpi.ProcessTransactions(txList, true, false)
 	ast.NotNil(batch)
@@ -331,6 +328,7 @@ func TestGetTimeoutTransaction(t *testing.T) {
 	tx1 := constructTx(3, &privKey1)
 	tx2 := constructTx(3, &privKey2)
 	txList = append(txList, tx1, tx2)
+	allTxHashes = append(allTxHashes, tx1.Hash(), tx2.Hash())
 	batch = mpi.ProcessTransactions(txList, true, true)
 	ast.NotNil(batch)
 
@@ -340,6 +338,7 @@ func TestGetTimeoutTransaction(t *testing.T) {
 	ast.Equal(2, len(timeoutList))
 	ast.Equal(3, len(timeoutList[0]))
 	ast.Equal(1, len(timeoutList[1]))
+	ast.Equal(6, mpi.txStore.ttlIndex.index.Len())
 
 	// wait another 150 millisecond, tx3 be timeout too.
 	// though tx1,tx2 has wait a long time, they are not local and they won't be broadcast
@@ -349,4 +348,22 @@ func TestGetTimeoutTransaction(t *testing.T) {
 	ast.Equal(2, len(timeoutList))
 	ast.Equal(3, len(timeoutList[0]))
 	ast.Equal(3, len(timeoutList[1]))
+	ast.Equal(6, mpi.txStore.ttlIndex.index.Len())
+
+	// check if all indices are normally cleaned after commit
+	ast.Equal(10, len(allTxHashes))
+	state := &ChainState{
+		TxHashList: allTxHashes,
+		Height:     uint64(2),
+	}
+	mpi.CommitTransactions(state)
+	time.Sleep(100 * time.Millisecond)
+	ast.Equal(0, mpi.txStore.ttlIndex.index.Len())
+	ast.Equal(0, len(mpi.txStore.ttlIndex.items))
+	ast.Equal(int64(math.MaxInt64), mpi.txStore.earliestTimestamp)
+	ast.Equal(0, mpi.txStore.priorityIndex.size())
+	ast.Equal(0, mpi.txStore.parkingLotIndex.size())
+	ast.Equal(0, len(mpi.txStore.batchedTxs))
+	ast.Equal(0, len(mpi.txStore.txHashMap))
+	ast.Equal(uint64(0), mpi.txStore.priorityNonBatchSize)
 }
diff --git a/pkg/order/mempool/tx_store.go b/pkg/order/mempool/tx_store.go
index 6dde2bd..e9419b7 100644
--- a/pkg/order/mempool/tx_store.go
+++ b/pkg/order/mempool/tx_store.go
@@ -218,10 +218,16 @@ func (tlm *txLiveTimeMap) removeByTtlKey(txs map[string][]*pb.Transaction) {
 		for _, tx := range list {
 			liveTime, ok := tlm.items[makeAccountNonceKey(account, tx.Nonce)]
 			if !ok {
-				return
+				continue
 			}
 			tlm.index.Delete(&orderedTimeoutKey{account, tx.Nonce, liveTime})
 			delete(tlm.items, makeAccountNonceKey(account, tx.Nonce))
 		}
 	}
 }
+
+func (tlm *txLiveTimeMap) updateByTtlKey(originalKey *orderedTimeoutKey, newTime int64) {
+	tlm.index.Delete(originalKey)
+	delete(tlm.items, makeAccountNonceKey(originalKey.account, originalKey.nonce))
+	tlm.insertByTtlKey(originalKey.account, originalKey.nonce, newTime)
+}