diff --git a/core/block.go b/core/block.go
index dbe3cdb26..96f8a9286 100644
--- a/core/block.go
+++ b/core/block.go
@@ -571,7 +571,7 @@ func (block *Block) CollectTransactions(deadlineInMs int64) {
 				executedAt := time.Now().UnixNano()
 				execute += executedAt - executeAt
 				if err != nil {
-					logging.VLog().WithFields(logrus.Fields{
+					logging.CLog().WithFields(logrus.Fields{
 						"tx":       tx,
 						"err":      err,
 						"giveback": giveback,
@@ -842,7 +842,7 @@ func (block *Block) triggerEvent() {
 		}
 		block.eventEmitter.Trigger(event)
 
-		events, err := block.FetchEvents(v.hash)
+		events, err := block.FetchCacheEventsOfCurBlock(v.hash)
 		if err != nil {
 			for _, e := range events {
 				block.eventEmitter.Trigger(e)
@@ -1224,17 +1224,16 @@ func (block *Block) GetNonce(address byteutils.Hash) (uint64, error) {
 	return account.Nonce(), nil
 }
 
-// RecordEvent record event's topic and data with txHash
-func (block *Block) RecordEvent(txHash byteutils.Hash, topic, data string) error {
-	event := &state.Event{Topic: topic, Data: data}
-	return block.WorldState().RecordEvent(txHash, event)
-}
-
 // FetchEvents fetch events by txHash.
 func (block *Block) FetchEvents(txHash byteutils.Hash) ([]*state.Event, error) {
 	return block.WorldState().FetchEvents(txHash)
 }
 
+// FetchCacheEventsOfCurBlock fetch events by txHash.
+func (block *Block) FetchCacheEventsOfCurBlock(txHash byteutils.Hash) ([]*state.Event, error) {
+	return block.WorldState().FetchCacheEventsOfCurBlock(txHash)
+}
+
 func (block *Block) rewardCoinbaseForMint() error {
 	coinbaseAddr := block.Coinbase().Bytes()
 	coinbaseAcc, err := block.WorldState().GetOrCreateUserAccount(coinbaseAddr)
diff --git a/core/block_test.go b/core/block_test.go
index 732038919..d7fa56370 100644
--- a/core/block_test.go
+++ b/core/block_test.go
@@ -488,12 +488,43 @@ func TestBlock_fetchEvents(t *testing.T) {
 		&state.Event{Topic: "chain.block", Data: "hello"},
 		&state.Event{Topic: "chain.block", Data: "hello"},
 	}
+	err := tail.worldState.Begin()
+	assert.Nil(t, err)
 	tx := &Transaction{hash: []byte("tx")}
+	txWorldState, err := tail.worldState.Prepare(tx)
+	assert.Nil(t, err)
 	for _, event := range events {
-		assert.Nil(t, tail.worldState.RecordEvent(tx.Hash(), event))
+		assert.Nil(t, txWorldState.RecordEvent(tx.Hash(), event))
 	}
+	_, err = tail.worldState.CheckAndUpdate(tx)
+	assert.Nil(t, err)
+
 	es, err := tail.FetchEvents(tx.Hash())
 	assert.Nil(t, err)
+	assert.Equal(t, len(events), len(es))
+	for idx, event := range es {
+		assert.Equal(t, events[idx], event)
+	}
+}
+
+func TestBlock_fetchCacheEventsOfCurBlock(t *testing.T) {
+	neb := testNeb(t)
+	bc := neb.chain
+
+	tail := bc.tailBlock
+	events := []*state.Event{
+		&state.Event{Topic: "chain.block", Data: "hello"},
+		&state.Event{Topic: "chain.tx", Data: "hello"},
+		&state.Event{Topic: "chain.block", Data: "hello"},
+		&state.Event{Topic: "chain.block", Data: "hello"},
+	}
+	tx := &Transaction{hash: []byte("tx")}
+	for _, event := range events {
+		assert.Nil(t, tail.worldState.RecordEvent(tx.Hash(), event))
+	}
+	es, err := tail.FetchCacheEventsOfCurBlock(tx.Hash())
+	assert.Nil(t, err)
+	assert.Equal(t, len(events), len(es))
 	for idx, event := range es {
 		assert.Equal(t, events[idx], event)
 	}
@@ -555,18 +586,6 @@ func TestGivebackInvalidTx(t *testing.T) {
 	assert.Equal(t, len(bc.txPool.all), 1)
 }
 
-func TestRecordEvent(t *testing.T) {
-	neb := testNeb(t)
-	bc := neb.chain
-	txHash := []byte("hello")
-	assert.Nil(t, bc.tailBlock.RecordEvent(txHash, TopicSendTransaction, "world"))
-	events, err := bc.tailBlock.FetchEvents(txHash)
-	assert.Nil(t, err)
-	assert.Equal(t, len(events), 1)
-	assert.Equal(t, events[0].Topic, TopicSendTransaction)
-	assert.Equal(t, events[0].Data, "world")
-}
-
 func TestBlockVerifyIntegrity(t *testing.T) {
 	neb := testNeb(t)
 	bc := neb.chain
diff --git a/core/state/types.go b/core/state/types.go
index af846de69..5a56757e9 100644
--- a/core/state/types.go
+++ b/core/state/types.go
@@ -148,6 +148,7 @@ type WorldState interface {
 
 	RecordEvent(txHash byteutils.Hash, event *Event) error
 	FetchEvents(byteutils.Hash) ([]*Event, error)
+	FetchCacheEventsOfCurBlock(byteutils.Hash) ([]*Event, error)
 
 	Dynasty() ([]byteutils.Hash, error)
 	DynastyRoot() byteutils.Hash
diff --git a/core/state/world_state.go b/core/state/world_state.go
index b67e36342..705a9d766 100644
--- a/core/state/world_state.go
+++ b/core/state/world_state.go
@@ -66,6 +66,8 @@ type states struct {
 	txid      interface{}
 
 	gasConsumed map[string]*util.Uint128
+
+	events map[string][]*Event
 }
 
 func newStates(consensus Consensus, stor storage.Storage) (*states, error) {
@@ -104,6 +106,7 @@ func newStates(consensus Consensus, stor storage.Storage) (*states, error) {
 		txid:      nil,
 
 		gasConsumed: make(map[string]*util.Uint128),
+		events:      make(map[string][]*Event),
 	}, nil
 }
 
@@ -113,10 +116,7 @@ func (s *states) Replay(done *states) error {
 	if err != nil {
 		return err
 	}
-	_, err = s.txsState.Replay(done.txsState)
-	if err != nil {
-		return err
-	}
+
 	_, err = s.eventsState.Replay(done.eventsState)
 	if err != nil {
 		return err
@@ -139,6 +139,40 @@ func (s *states) Replay(done *states) error {
 		}
 	}
 
+	//reply event
+	err = s.ReplayEvent(done)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *states) ReplayEvent(done *states) error {
+
+	//replay event
+	for tx, events := range done.events {
+		txHash, err := byteutils.FromHex(tx)
+		if err != nil {
+			return err
+		}
+		for idx, event := range events {
+			cnt := int64(idx + 1)
+
+			key := append(txHash, byteutils.FromInt64(cnt)...)
+			bytes, err := json.Marshal(event)
+			if err != nil {
+				return err
+			}
+
+			_, err = s.eventsState.Put(key, bytes)
+			if err != nil {
+				return err
+			}
+		}
+		s.events[tx] = done.events[tx]
+	}
+
 	return nil
 }
 
@@ -190,6 +224,7 @@ func (s *states) Clone() (WorldState, error) {
 		txid:      s.txid,
 
 		gasConsumed: make(map[string]*util.Uint128),
+		events:      make(map[string][]*Event),
 	}, nil
 }
 
@@ -277,6 +312,7 @@ func (s *states) Prepare(txid interface{}) (TxWorldState, error) {
 		txid:      txid,
 
 		gasConsumed: make(map[string]*util.Uint128),
+		events:      make(map[string][]*Event, 0),
 	}, nil
 }
 
@@ -396,34 +432,22 @@ func (s *states) PutTx(txHash byteutils.Hash, txBytes []byte) error {
 }
 
 func (s *states) RecordEvent(txHash byteutils.Hash, event *Event) error {
-	iter, err := s.eventsState.Iterator(txHash)
-	if err != nil && err != storage.ErrKeyNotFound {
-		return err
-	}
-	cnt := int64(0)
-	if err != storage.ErrKeyNotFound {
-		exist, err := iter.Next()
-		if err != nil {
-			return err
-		}
-		for exist {
-			cnt++
-			exist, err = iter.Next()
-			if err != nil {
-				return err
-			}
-		}
+
+	events, ok := s.events[txHash.String()]
+	if !ok {
+		events = make([]*Event, 0)
 	}
-	cnt++
+
+	cnt := int64(len(s.events) + 1)
+
 	key := append(txHash, byteutils.FromInt64(cnt)...)
 	bytes, err := json.Marshal(event)
 	if err != nil {
 		return err
 	}
-	_, err = s.eventsState.Put(key, bytes)
-	if err != nil {
-		return err
-	}
+
+	s.events[txHash.String()] = append(events, event)
+
 	// record change log
 	if err := s.changelog.Put(key, bytes); err != nil {
 		return err
@@ -432,6 +456,20 @@ func (s *states) RecordEvent(txHash byteutils.Hash, event *Event) error {
 	return nil
 }
 
+func (s *states) FetchCacheEventsOfCurBlock(txHash byteutils.Hash) ([]*Event, error) {
+	txevents, ok := s.events[txHash.String()]
+	if !ok {
+		return nil, nil
+	}
+
+	events := []*Event{}
+	for _, event := range txevents {
+		events = append(events, event)
+	}
+
+	return events, nil
+}
+
 func (s *states) FetchEvents(txHash byteutils.Hash) ([]*Event, error) {
 	events := []*Event{}
 	iter, err := s.eventsState.Iterator(txHash)
diff --git a/nf/nvm/context.go b/nf/nvm/context.go
index 8f132ac90..7b53f759c 100644
--- a/nf/nvm/context.go
+++ b/nf/nvm/context.go
@@ -42,12 +42,12 @@ type Block interface {
 	Height() uint64
 	VerifyAddress(str string) bool
 	SerializeTxByHash(hash byteutils.Hash) (proto.Message, error)
-	RecordEvent(txHash byteutils.Hash, topic, data string) error
 }
 
 // TxWorldState interface of world state
 type TxWorldState interface {
 	GetOrCreateUserAccount(addr byteutils.Hash) (state.Account, error)
+	RecordEvent(txHash byteutils.Hash, event *state.Event) error
 }
 
 // AccountState context account state
diff --git a/nf/nvm/event.go b/nf/nvm/event.go
index 3bd84809e..09be4c442 100644
--- a/nf/nvm/event.go
+++ b/nf/nvm/event.go
@@ -22,6 +22,7 @@ import "C"
 import (
 	"unsafe"
 
+	"github.com/nebulasio/go-nebulas/core/state"
 	"github.com/nebulasio/go-nebulas/util/byteutils"
 	"github.com/nebulasio/go-nebulas/util/logging"
 	"github.com/sirupsen/logrus"
@@ -57,5 +58,7 @@ func EventTriggerFunc(handler unsafe.Pointer, topic, data *C.char) {
 
 	txHash, _ := byteutils.FromHex(e.ctx.tx.Hash)
 	contractTopic := EventNameSpaceContract + "." + gTopic
-	e.ctx.block.RecordEvent(txHash, contractTopic, gData)
+
+	event := &state.Event{Topic: contractTopic, Data: gData}
+	e.ctx.txWorldState.RecordEvent(txHash, event)
 }
diff --git a/storage/disk_storage.go b/storage/disk_storage.go
index 4e7e6a3f6..fbe0e9628 100644
--- a/storage/disk_storage.go
+++ b/storage/disk_storage.go
@@ -50,9 +50,11 @@ func NewDiskStorage(path string) (*DiskStorage, error) {
 		BlockSize:              4 * opt.MiB,
 		Filter:                 filter.NewBloomFilter(10),
 	})
+
 	if err != nil {
 		return nil, err
 	}
+
 	return &DiskStorage{
 		db:          db,
 		enableBatch: false,