diff --git a/bcs/consensus/tdpos/schedule.go b/bcs/consensus/tdpos/schedule.go
index c99a2827..7794f848 100644
--- a/bcs/consensus/tdpos/schedule.go
+++ b/bcs/consensus/tdpos/schedule.go
@@ -210,10 +210,11 @@ func (s *tdposSchedule) UpdateProposers(height int64) bool {
 		return false
 	}
 	if !common.AddressEqual(nextProposers, s.validators) {
-		s.log.Debug("tdpos::UpdateProposers", "origin", s.validators, "proposers", nextProposers)
+		s.log.Debug("tdpos::UpdateProposers", "origin", s.validators, "proposers", nextProposers, "height", height)
 		s.validators = nextProposers
 		return true
 	}
+	s.log.Debug("tdpos::UpdateProposers", "origin", s.validators, "height", height)
 	return false
 }
 
@@ -352,7 +353,7 @@ func (s *tdposSchedule) calHisValidators(height int64) ([]string, error) {
 	term, pos, blockPos := s.minerScheduling(block.GetTimestamp())
 	// 往前回溯的最远距离为internal，即该轮term之前最多生产过多少个区块
 	internal := pos*s.blockNum + blockPos
-	begin := block.GetHeight() - internal
+	begin := block.GetHeight() - internal - 1
 	if begin <= s.startHeight {
 		begin = s.startHeight
 	}
@@ -361,7 +362,9 @@ func (s *tdposSchedule) calHisValidators(height int64) ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
-	s.log.Debug("tdpos::CalculateProposers::target height.", "height", height, "targetHeight", targetHeight, "term", term)
+	s.log.Debug("tdpos::CalculateProposers::target height.", "inputHeight", height, "targetHeight", targetHeight,
+		"begin", begin, "end", block.GetHeight(), "term", term, "pos", pos, "blockPos", blockPos, "internal", internal,
+		"blockNum", s.blockNum, "block.Timestamp", block.GetTimestamp())
 	return s.calTopKNominator(targetHeight)
 }
 
@@ -378,7 +381,7 @@ func (s *tdposSchedule) binarySearch(begin int64, end int64, term int64) (int64,
 			return -1, err
 		}
 		if midTerm < term && nextMidTerm == term {
-			return mid + 1, nil
+			return mid, nil
 		}
 		if midTerm < term {
 			begin = mid + 1
diff --git a/bcs/consensus/tdpos/schedule_test.go b/bcs/consensus/tdpos/schedule_test.go
index 4f84f6d0..c7d8abb0 100644
--- a/bcs/consensus/tdpos/schedule_test.go
+++ b/bcs/consensus/tdpos/schedule_test.go
@@ -178,12 +178,12 @@ func TestCalHisValidators(t *testing.T) {
 		return
 	}
 	target, _ = s.binarySearch(int64(1), int64(5), int64(2))
-	if target != 4 {
+	if target != 3 {
 		t.Error("binarySearch cal err2.", "target", target)
 		return
 	}
 	target, _ = s.binarySearch(int64(5), int64(6), int64(3))
-	if target != 6 {
+	if target != 5 {
 		t.Error("binarySearch cal err.", "target", target)
 		return
 	}
@@ -198,7 +198,7 @@ func TestCalHisValidators(t *testing.T) {
 		return
 	}
 	target, _ = s.binarySearch(int64(5), int64(11), int64(5))
-	if target != 8 {
+	if target != 7 {
 		t.Error("binarySearch cal err.", "target", target)
 		return
 	}
diff --git a/bcs/consensus/tdpos/tdpos.go b/bcs/consensus/tdpos/tdpos.go
index 4dbed043..003161dc 100644
--- a/bcs/consensus/tdpos/tdpos.go
+++ b/bcs/consensus/tdpos/tdpos.go
@@ -177,7 +177,9 @@ func (tp *tdposConsensus) CheckMinerMatch(ctx xcontext.XContext, block cctx.Bloc
 		return false, err
 	}
 	if wantProposers[pos] != string(block.GetProposer()) {
-		tp.log.Error("consensus:tdpos:CheckMinerMatch: invalid proposer", "want", wantProposers[pos], "have", string(block.GetProposer()))
+		tp.log.Error("consensus:tdpos:CheckMinerMatch: invalid proposer",
+			"want", wantProposers[pos], "have", string(block.GetProposer()),
+			"wantProposers", wantProposers, "pos", pos)
 		return false, ErrInvalidProposer
 	}
 
diff --git a/kernel/consensus/base/driver/chained-bft/saftyrules.go b/kernel/consensus/base/driver/chained-bft/saftyrules.go
index 80d2ac0a..ec86b9f4 100644
--- a/kernel/consensus/base/driver/chained-bft/saftyrules.go
+++ b/kernel/consensus/base/driver/chained-bft/saftyrules.go
@@ -145,6 +145,7 @@ func (s *DefaultSaftyRules) CheckProposal(proposal, parent storage.QuorumCertInt
 
 	// 检查justify的所有vote签名
 	justifySigns := parent.GetSignsInfo()
+	s.Log.Debug("DefaultSaftyRules::CheckProposal", "parent", parent, "justifyValidators", justifyValidators)
 	validCnt := 0
 	for _, v := range justifySigns {
 		if !isInSlice(v.GetAddress(), justifyValidators) {
diff --git a/kernel/consensus/base/driver/chained-bft/smr.go b/kernel/consensus/base/driver/chained-bft/smr.go
index 9ce170e8..29538915 100644
--- a/kernel/consensus/base/driver/chained-bft/smr.go
+++ b/kernel/consensus/base/driver/chained-bft/smr.go
@@ -379,7 +379,12 @@ func (s *Smr) ProcessProposal(viewNumber int64, proposalID []byte, parentID []by
 		s.log.Error("smr::ProcessProposal::NewMessage error")
 		return ErrP2PInternalErr
 	}
+
 	go s.p2p.SendMessage(createNewBCtx(), netMsg, p2p.WithAccounts(s.removeLocalValidator(validatesIpInfo)))
+	s.log.Debug("smr::ProcessProposal::proposal", "localAddress", s.address, "validatesIpInfo", validatesIpInfo,
+		"ProposalView", proposal.ProposalView, "ProposalId", utils.F(proposal.ProposalId),
+		"Timestamp", proposal.Timestamp, "JustifyQC", proposal.JustifyQC)
+
 	s.localProposal.Store(utils.F(proposalID), proposal.Timestamp)
 	// 若为单候选人情况，则此处需要特殊处理，矿工需要给自己提前签名
 	if len(validatesIpInfo) == 1 {
@@ -518,6 +523,9 @@ func (s *Smr) handleReceivedProposal(msg *xuperp2p.XuperMessage) {
 		// 此处如果失败，仍会执行下层逻辑，因为是多个节点通知该轮Leader，因此若发不出去仍可继续运行
 		if leader != "" && netMsg != nil && leader != s.address {
 			go s.p2p.SendMessage(createNewBCtx(), netMsg, p2p.WithAccounts([]string{leader}))
+			s.log.Debug("smr::handleReceivedProposal::proposal", "localAddress", s.address, "leader", leader,
+				"ProposalView", newProposalMsg.ProposalView, "ProposalId", utils.F(newProposalMsg.ProposalId),
+				"Timestamp", newProposalMsg.Timestamp, "JustifyQC", newProposalMsg.JustifyQC)
 		}
 	}
 
@@ -556,7 +564,7 @@ func (s *Smr) handleReceivedProposal(msg *xuperp2p.XuperMessage) {
 	// 6.发送一个vote消息给下一个Leader
 	nextLeader := s.election.GetLeader(s.pacemaker.GetCurrentView() + 1)
 	if nextLeader == "" {
-		s.log.Debug("smr::handleReceivedProposal::empty next leader", "next round", s.pacemaker.GetCurrentView()+1)
+		s.log.Warn("smr::handleReceivedProposal::empty next leader", "next round", s.pacemaker.GetCurrentView()+1)
 		return
 	}
 	s.voteProposal(newProposalMsg.GetProposalId(), newVote, newLedgerInfo, nextLeader)
diff --git a/kernel/consensus/base/driver/chained-bft/smr_test.go b/kernel/consensus/base/driver/chained-bft/smr_test.go
index 94296f38..64c6eca2 100644
--- a/kernel/consensus/base/driver/chained-bft/smr_test.go
+++ b/kernel/consensus/base/driver/chained-bft/smr_test.go
@@ -108,6 +108,7 @@ func NewSMR(node string, log logs.Logger, p2p network.Network, t *testing.T) *Sm
 	saftyrules := &DefaultSaftyRules{
 		Crypto: cryptoClient,
 		QcTree: q,
+		Log:    log,
 	}
 	election := &ElectionA{
 		addrs: []string{NodeA, NodeB, NodeC},
diff --git a/kernel/engines/xuperos/miner/miner.go b/kernel/engines/xuperos/miner/miner.go
index 4fbcfbbf..991f3f11 100644
--- a/kernel/engines/xuperos/miner/miner.go
+++ b/kernel/engines/xuperos/miner/miner.go
@@ -24,7 +24,7 @@ import (
 
 const (
 	tickOnCalcBlock           = time.Second
-	syncOnstatusChangeTimeout = 1 * time.Minute
+	syncOnStatusChangeTimeout = 1 * time.Minute
 
 	statusFollowing = 0
 	statusMining    = 1
@@ -65,21 +65,26 @@ func (t *Miner) ProcBlock(ctx xctx.XContext, block *lpb.InternalBlock) error {
 	return nil
 }
 
+// Start
 // 启动矿工，周期检查矿工身份
-// 同一时间，矿工状态是唯一的。0:休眠中 1:同步区块中 2:打包区块中
+// 同一时间，矿工状态是唯一的
+// 0:休眠中 1:同步区块中 2:打包区块中
 func (t *Miner) Start() {
+	var err error
+
 	// 用于监测退出
 	t.exitWG.Add(1)
 	defer t.exitWG.Done()
 
-	var err error
+	// 节点初始状态为同步节点
 	t.status = statusFollowing
 
+	// 开启挖矿前先同步区块
 	ctx := &xctx.BaseCtx{
 		XLog:  t.log,
 		Timer: timer.NewXTimer(),
 	}
-	t.syncWithNeighbors(ctx)
+	_ = t.syncWithNeighbors(ctx)
 
 	// 启动矿工循环
 	for !t.IsExit() {
@@ -124,6 +129,7 @@ func (t *Miner) step() error {
 		Timer: timer.NewXTimer(),
 	}
 
+	// 账本和状态机最新区块id不一致，需要进行一次同步
 	if !bytes.Equal(ledgerTipId, stateTipId) {
 		err := t.ctx.State.Walk(ledgerTipId, false)
 		if err != nil {
@@ -136,6 +142,15 @@ func (t *Miner) step() error {
 	ctx.GetLog().Trace("miner step", "ledgerTipHeight", ledgerTipHeight, "ledgerTipId",
 		utils.F(ledgerTipId), "stateTipId", utils.F(stateTipId))
 
+	// 如果上次角色是非矿工，则尝试同步网络最新区块
+	// 注意：这里出现错误也要继续执行，防止恶意节点错误出块导致流程无法继续执行
+	if t.status == statusFollowing {
+		err := t.syncWithValidators(ctx, syncOnStatusChangeTimeout)
+		ctx.GetLog().Trace("miner syncWithValidators before CompeteMaster", "originTipHeight", ledgerTipHeight,
+			"currentLedgerHeight", t.ctx.Ledger.GetMeta().TrunkHeight, "err", err)
+		trace("syncUpValidators")
+	}
+
 	// 通过共识检查矿工身份
 	isMiner, isSync, err := t.ctx.Consensus.CompeteMaster(ledgerTipHeight + 1)
 	trace("competeMaster")
@@ -143,30 +158,35 @@ func (t *Miner) step() error {
 	if err != nil {
 		return err
 	}
-	// 如需要同步，尝试同步网络最新区块
-	if isMiner && isSync {
-		err = t.syncWithValidators(ctx, syncOnstatusChangeTimeout)
-		if err != nil {
-			return err
-		}
-	}
-	trace("syncUpValidators")
 
 	// 如果是矿工，出块
 	if isMiner {
-		if t.status == statusFollowing {
+		if t.status == statusFollowing || isSync {
 			ctx.GetLog().Info("miner change follow=>miner",
 				"miner", t.ctx.Address.Address,
 				"netAddr", t.ctx.EngCtx.Net.PeerInfo().Id,
 				"height", t.ctx.Ledger.GetMeta().GetTrunkHeight(),
 			)
+
 			// 在由非矿工向矿工切换的这次"边沿触发"，主动向所有的验证集合的最长链进行一次区块同步
-			err = t.syncWithValidators(ctx, syncOnstatusChangeTimeout)
+			err = t.syncWithValidators(ctx, syncOnStatusChangeTimeout)
 			if err != nil {
+				ctx.GetLog().Error("miner change follow=>miner syncWithValidators failed", "err", err)
 				return err
 			}
+
+			// 由于同步了最长链，所以这里需要检查链是否增长
+			// 由于pos和poa类共识依赖账本高度来判断状态，如果链发生变化则表明CompeteMaster的结果需要重新根据当前最新高度计算
+			if ledgerTipHeight != t.ctx.Ledger.GetMeta().TrunkHeight {
+				ctx.GetLog().Trace("miner change follow=>miner", "originTipHeight", ledgerTipHeight, "currentLedgerHeight",
+					t.ctx.Ledger.GetMeta().TrunkHeight, "isMiner", isMiner, "isSync", isSync)
+				return nil
+			}
+			trace("syncUpValidators")
 		}
 		t.status = statusMining
+
+		// 开始挖矿
 		err = t.mining(ctx)
 		if err != nil {
 			return err
@@ -192,7 +212,7 @@ func (t *Miner) step() error {
 	return nil
 }
 
-// 挖矿生产区块
+// mining 挖矿生产区块
 func (t *Miner) mining(ctx xctx.XContext) error {
 	ctx.GetLog().Debug("mining start.")
 
@@ -213,6 +233,7 @@ func (t *Miner) mining(ctx xctx.XContext) error {
 		}
 		// 重置高度
 		height = t.ctx.Ledger.GetMeta().TrunkHeight + 1
+		ctx.GetLog().Debug("truncateTarget result", "newHeight", height)
 	}
 
 	// 2.打包区块
@@ -249,6 +270,8 @@ func (t *Miner) mining(ctx xctx.XContext) error {
 			"blockId", utils.F(block.GetBlockid()))
 		return err
 	}
+
+	// 5.可插拔共识，根据区块高度确认是否需要切换升级共识实例
 	err = t.ctx.Consensus.SwitchConsensus(block.Height)
 	if err != nil {
 		ctx.GetLog().Warn("SwitchConsensus failed", "bcname", t.ctx.BCName,