diff --git a/pkg/chainsync/types/target_tracker.go b/pkg/chainsync/types/target_tracker.go
index 26a04470ae..ec5cb33eca 100644
--- a/pkg/chainsync/types/target_tracker.go
+++ b/pkg/chainsync/types/target_tracker.go
@@ -2,6 +2,10 @@ package types
 
 import (
 	"container/list"
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/venus/venus-shared/actors/builtin"
+	"github.com/filecoin-project/venus/venus-shared/actors/policy"
 	"sort"
 	"strconv"
 	"sync"
@@ -81,6 +85,8 @@ type TargetTracker struct {
 
 	subs  map[string]chan struct{}
 	subLk sync.Mutex
+
+	tipsetCache map[abi.ChainEpoch][]*types.BlockHeader
 }
 
 // NewTargetTracker returns a new target queue.
@@ -94,6 +100,7 @@ func NewTargetTracker(size int) *TargetTracker {
 		lk:          sync.Mutex{},
 		lowWeight:   fbig.NewInt(0),
 		subs:        make(map[string]chan struct{}),
+		tipsetCache: make(map[abi.ChainEpoch][]*types.BlockHeader),
 	}
 }
 
@@ -127,6 +134,47 @@ func (tq *TargetTracker) pubNewTarget() {
 	}
 }
 
+func (tq *TargetTracker) checkBlock(block *types.BlockHeader) bool {
+	bls, exists := tq.tipsetCache[block.Height]
+	if !exists {
+		cache := make([]*types.BlockHeader, 0, builtin.ExpectedLeadersPerEpoch)
+		tq.tipsetCache[block.Height] = append(cache, block)
+		return true
+	}
+
+	for _, b := range bls {
+		if b.Cid() == block.Cid() {
+			log.Warnf("block(%s) already in tipset:%d", b.Cid().String(), b.Height)
+			return true
+		}
+		if b.Miner == block.Miner {
+			log.Warnf("miner:%d packed more than none block in single tipset:%d, it's illegle.", b.Miner.String(), b.Height)
+			return false
+		}
+	}
+
+	tq.tipsetCache[block.Height] = append(bls, block)
+
+	return true
+}
+
+func (tq *TargetTracker) checkTipset(target *Target) (*Target, error) {
+	bls := target.Head.Blocks()
+	var newBls []*types.BlockHeader
+
+	for _, b := range bls {
+		if tq.checkBlock(b) {
+			newBls = append(newBls, b)
+		}
+	}
+	var err error
+	target.Head, err = types.NewTipSet(newBls)
+
+	delete(tq.tipsetCache, target.Head.Height()-policy.ChainFinality)
+
+	return target, err
+}
+
 // Add adds a sync target to the target queue.
 // First, check whether the weight is received or not, and the message will record the minimum weight.
 // If the weight is less than the current weight, it will exit automatically.
@@ -143,11 +191,18 @@ func (tq *TargetTracker) Add(t *Target) bool {
 
 	tq.lk.Lock()
 	defer tq.lk.Unlock()
+
 	//do not sync less weight
 	if t.Head.At(0).ParentWeight.LessThan(tq.lowWeight) {
 		return false
 	}
 
+	var err error
+	if t, err = tq.checkTipset(t); err != nil {
+		log.Errorf("targettracker add failed, check tipsit failed:%s", err.Error())
+		return false
+	}
+
 	t, ok := tq.widen(t)
 	if !ok {
 		return false
@@ -258,6 +313,8 @@ func (tq *TargetTracker) widen(t *Target) (*Target, bool) {
 		}
 	}
 
+	miners := make(map[address.Address]interface{})
+
 	//collect neighbor block in queue include history to get block with same weight and height
 	sameWeightBlks := make(map[cid.Cid]*types.BlockHeader)
 	for _, val := range tq.targetSet {
@@ -266,7 +323,13 @@ func (tq *TargetTracker) widen(t *Target) (*Target, bool) {
 				bid := blk.Cid()
 				if !t.Head.Key().Has(bid) {
 					if _, ok := sameWeightBlks[bid]; !ok {
+						if _, isok := miners[blk.Miner]; isok {
+							// TODO: a miner mined more than one blocks ?
+							log.Warnf("miner : %s mined more than one blocks, this is illegal", blk.Miner.String())
+							return nil, false
+						}
 						sameWeightBlks[bid] = blk
+						miners[blk.Miner] = nil
 					}
 				}
 			}
diff --git a/pkg/consensus/block_validator.go b/pkg/consensus/block_validator.go
index d951d68a11..ddfcf0b2e5 100644
--- a/pkg/consensus/block_validator.go
+++ b/pkg/consensus/block_validator.go
@@ -121,6 +121,8 @@ func (bv *BlockValidator) ValidateBlockMsg(ctx context.Context, blk *types.Block
 		logExpect.Debugw("block validation header", "Cid", blk.Cid(), "took", time.Since(validationStart), "height", blk.Header.Height, "age", time.Since(time.Unix(int64(blk.Header.Timestamp), 0)))
 	}()
 
+
+
 	return bv.validateBlockMsg(ctx, blk)
 }