diff --git a/core/blockchain.go b/core/blockchain.go
index cead459551..69ac93c63c 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -2220,6 +2220,7 @@ func (bc *BlockChain) reorg(oldHead *types.Header, newHead *types.Block) error {
 	}
 	// Both sides of the reorg are at the same number, reduce both until the common
 	// ancestor is found
+	log.Info("neo reorg start")
 	for {
 		// If the common ancestor was found, bail out
 		if oldBlock.Hash() == newBlock.Hash() {
@@ -2228,10 +2229,12 @@ func (bc *BlockChain) reorg(oldHead *types.Header, newHead *types.Block) error {
 		}
 		// Remove an old block as well as stash away a new block
 		oldChain = append(oldChain, oldBlock)
+		log.Info("neo reorg oldBlock info ", "hash", oldBlock.Hash(), "number", oldBlock.Number())
 		for _, tx := range oldBlock.Transactions() {
 			deletedTxs = append(deletedTxs, tx.Hash())
 		}
 		newChain = append(newChain, newBlock)
+		log.Info("neo reorg newBlock info ", "hash", newBlock.Hash(), "number", newBlock.Number())
 
 		// Step back with both chains
 		oldBlock = bc.GetBlock(oldBlock.ParentHash(), oldBlock.NumberU64()-1)
@@ -2243,6 +2246,7 @@ func (bc *BlockChain) reorg(oldHead *types.Header, newHead *types.Block) error {
 			return fmt.Errorf("invalid new chain")
 		}
 	}
+	log.Info("neo reorg end")
 
 	// Ensure the user sees large reorgs
 	if len(oldChain) > 0 && len(newChain) > 0 {
@@ -2378,6 +2382,7 @@ func (bc *BlockChain) SetCanonical(head *types.Block) (common.Hash, error) {
 	// Run the reorg if necessary and set the given block as new head.
 	start := time.Now()
 	if head.ParentHash() != bc.CurrentBlock().Hash() {
+		log.Info("neo reorg start ", "parentHash", head.ParentHash(), "currentHash", bc.CurrentBlock().Hash())
 		if err := bc.reorg(bc.CurrentBlock(), head); err != nil {
 			return common.Hash{}, err
 		}
diff --git a/core/blockchain_reader.go b/core/blockchain_reader.go
index 21a9c6676b..5c97b9ee46 100644
--- a/core/blockchain_reader.go
+++ b/core/blockchain_reader.go
@@ -17,6 +17,7 @@
 package core
 
 import (
+	"github.com/ethereum/go-ethereum/log"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -182,6 +183,7 @@ func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block {
 // GetBlockByNumber retrieves a block from the database by number, caching it
 // (associated with its hash) if found.
 func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block {
+	log.Info("neo get block by number test")
 	hash := rawdb.ReadCanonicalHash(bc.db, number)
 	if hash == (common.Hash{}) {
 		return nil
diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index 8d5d301518..059aa746d3 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -209,10 +209,11 @@ func (api *ConsensusAPI) verifyPayloadAttributes(attr *engine.PayloadAttributes)
 }
 
 func (api *ConsensusAPI) forkchoiceUpdated(update engine.ForkchoiceStateV1, payloadAttributes *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
+	log.Info("neo reorg verify")
 	api.forkchoiceLock.Lock()
 	defer api.forkchoiceLock.Unlock()
 
-	log.Trace("Engine API request received", "method", "ForkchoiceUpdated", "head", update.HeadBlockHash, "finalized", update.FinalizedBlockHash, "safe", update.SafeBlockHash)
+	log.Info("Engine API request received", "method", "ForkchoiceUpdated", "head", update.HeadBlockHash, "finalized", update.FinalizedBlockHash, "safe", update.SafeBlockHash)
 	if update.HeadBlockHash == (common.Hash{}) {
 		log.Warn("Forkchoice requested update to zero hash")
 		return engine.STATUS_INVALID, nil // TODO(karalabe): Why does someone send us this?