diff --git a/consensus/consensus_service.go b/consensus/consensus_service.go
index f77eef498..5cd61c366 100644
--- a/consensus/consensus_service.go
+++ b/consensus/consensus_service.go
@@ -264,6 +264,9 @@ func retrievePublicKeysFromLastBlock(bc consensus_engine.ChainReader, header *ty
 // VerifySeal implements consensus.Engine, checking whether the given block satisfies
 // the PoS difficulty requirements, i.e. >= 2f+1 valid signatures from the committee
 func (consensus *Consensus) VerifySeal(chain consensus_engine.ChainReader, header *types.Header) error {
+	if chain.CurrentHeader().Number.Uint64() <= uint64(1) {
+		return nil
+	}
 	publicKeys, err := retrievePublicKeysFromLastBlock(chain, header)
 	if err != nil {
 		return ctxerror.New("[VerifySeal] Cannot retrieve publickeys from last block").WithCause(err)
diff --git a/consensus/consensus_v2.go b/consensus/consensus_v2.go
index e204afec1..a717c41ea 100644
--- a/consensus/consensus_v2.go
+++ b/consensus/consensus_v2.go
@@ -164,7 +164,7 @@ func (consensus *Consensus) onAnnounce(msg *msg_pb.Message) {
 		return
 	}
 	if consensus.mode.Mode() == Normal {
-		if err = consensus.VerifyHeader(consensus.ChainReader, &headerObj, false); err != nil {
+		if err = consensus.VerifyHeader(consensus.ChainReader, &headerObj, true); err != nil {
 			consensus.getLogger().Warn("[OnAnnounce] Block content is not verified successfully", "error", err, "inChain", consensus.ChainReader.CurrentHeader().Number, "MsgBlockNum", headerObj.Number)
 			return
 		}
@@ -397,7 +397,7 @@ func (consensus *Consensus) onPrepared(msg *msg_pb.Message) {
 		return
 	}
 	if consensus.mode.Mode() == Normal {
-		if err := consensus.VerifyHeader(consensus.ChainReader, blockObj.Header(), false); err != nil {
+		if err := consensus.VerifyHeader(consensus.ChainReader, blockObj.Header(), true); err != nil {
 			consensus.getLogger().Warn("[OnPrepared] Block header is not verified successfully", "error", err, "inChain", consensus.ChainReader.CurrentHeader().Number, "MsgBlockNum", blockObj.Header().Number)
 			return
 		}