diff --git a/consensus/vbft/service.go b/consensus/vbft/service.go
index ae947404..3124198b 100644
--- a/consensus/vbft/service.go
+++ b/consensus/vbft/service.go
@@ -2156,7 +2156,7 @@ func (self *Server) checkNeedUpdateChainConfig(blockNum uint32) bool {
 func (self *Server) checkUpdateChainConfig(blkNum uint32) bool {
 	force, err := isUpdate(self.blockPool.getExecWriteSet(blkNum-1), self.config.View)
 	if err != nil {
-		log.Errorf("checkUpdateChainConfig err:%s", err)
+		log.Infof("checkUpdateChainConfig err:%s", err)
 		return false
 	}
 	log.Debugf("checkUpdateChainConfig force: %v", force)
@@ -2207,6 +2207,11 @@ func (self *Server) makeProposal(blkNum uint32, forEmpty bool) error {
 		if err != nil {
 			return fmt.Errorf("getChainConfig failed:%s", err)
 		}
+		if chainconfig == nil {
+			log.Errorf("chain config not found in DB, reusing last config")
+			cfg2 := *self.config // copy current config
+			chainconfig = &cfg2
+		}
 		//add transaction invoke governance native commit_pos contract
 		if self.checkNeedUpdateChainConfig(blkNum) {
 			tx, err := self.creategovernaceTransaction(blkNum)
diff --git a/consensus/vbft/utils.go b/consensus/vbft/utils.go
index 8a837af1..a3c3b4f5 100644
--- a/consensus/vbft/utils.go
+++ b/consensus/vbft/utils.go
@@ -270,6 +270,9 @@ func GetGovernanceView(memdb *overlaydb.MemDB) (*gov.GovernanceView, error) {
 
 func getChainConfig(memdb *overlaydb.MemDB, blkNum uint32) (*vconfig.ChainConfig, error) {
 	config, err := GetVbftConfigInfo(memdb)
+	if err == scommon.ErrNotFound {
+		return nil, nil
+	}
 	if err != nil {
 		return nil, fmt.Errorf("failed to get chainconfig from leveldb: %s", err)
 	}
diff --git a/go.sum b/go.sum
index 6af9c6e4..07fa5e59 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,7 @@ github.com/JohnCGriffin/overflow v0.0.0-20170615021017-4d914c927216/go.mod h1:X0
 github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
+github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
 github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
@@ -49,6 +50,7 @@ github.com/howeyc/gopass v0.0.0-20190910152052-7cb4b85ec19c/go.mod h1:lADxMC39cJ
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/itchyny/base58-go v0.0.5 h1:uv3ieMgCtuE9HtN0Gux375+GOApFnifLkyvSseHBaH0=
 github.com/itchyny/base58-go v0.0.5/go.mod h1:SrMWPE3DFuJJp1M/RUhu4fccp/y9AlB8AL3o3duPToU=
+github.com/itchyny/base58-go v0.1.0 h1:zF5spLDo956exUAD17o+7GamZTRkXOZlqJjRciZwd1I=
 github.com/itchyny/base58-go v0.1.0/go.mod h1:SrMWPE3DFuJJp1M/RUhu4fccp/y9AlB8AL3o3duPToU=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
@@ -63,11 +65,14 @@ github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/ontio/ontology-crypto v1.0.5 h1:VYIEL9yF1d8vWxgLedqoQXKdyw2oY46NliGCQn1IKDM=
 github.com/ontio/ontology-crypto v1.0.5/go.mod h1:ebrQJ4/VS2F6pwHGktHDYtY/7Y2ca/ogfnlYABrQI2c=
+github.com/ontio/ontology-crypto v1.0.8 h1:xft6K8I43vkl60kywT/9GZlUjdacaL7OF6MFFb32kE4=
 github.com/ontio/ontology-crypto v1.0.8/go.mod h1:RW/HSgBTd6Qcuhr/C4luOftN+LNl5oZTQzAywHTsmtY=
 github.com/ontio/ontology-eventbus v0.9.1 h1:nt3AXWx3gOyqtLiU4EwI92Yc4ik/pWHu9xRK15uHSOs=
 github.com/ontio/ontology-eventbus v0.9.1/go.mod h1:hCQIlbdPckcfykMeVUdWrqHZ8d30TBdmLfXCVWGkYhM=
 github.com/ontio/wagon v0.3.1-0.20191012103353-ef8d35ecd300 h1:E+8mJjO4xOPGlbSoJiElZ6yYks/KdPe4j9gXYUMpbdA=
 github.com/ontio/wagon v0.3.1-0.20191012103353-ef8d35ecd300/go.mod h1:zHOMvbitcZek8oshsMO5VpyBjWjV9X8cn8WTZwdebpM=
+github.com/ontio/wagon v0.3.1-0.20191223040208-db6073fb2776 h1:cfHznrh9WsSH7F253Lr6TkYa38p/3Cgk0PJS7238cRQ=
+github.com/ontio/wagon v0.3.1-0.20191223040208-db6073fb2776/go.mod h1:zHOMvbitcZek8oshsMO5VpyBjWjV9X8cn8WTZwdebpM=
 github.com/orcaman/concurrent-map v0.0.0-20190826125027-8c72a8bb44f6 h1:lNCW6THrCKBiJBpz8kbVGjC7MgdCGKwuvBgc7LoD6sw=
 github.com/orcaman/concurrent-map v0.0.0-20190826125027-8c72a8bb44f6/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
 github.com/pborman/uuid v1.2.0 h1:J7Q5mO4ysT1dv8hyrUGHb9+ooztCXu1D8MY8DZYsu3g=