diff --git a/pkg/infra/basic/logger.go b/pkg/infra/basic/logger.go
index ed434ffa..f6cfdc89 100644
--- a/pkg/infra/basic/logger.go
+++ b/pkg/infra/basic/logger.go
@@ -42,8 +42,8 @@ func Init(service string) (opentracing.Tracer, io.Closer) {
 }
 
 const (
-	TRANSCATION         = "TRANSCATION"
-	TRANSCATIONSTART    = "TRANSCATIONSTART"
+	TRANSACTION         = "TRANSACTION"
+	TRANSACTIONSTART    = "TRANSACTIONSTART"
 	SIGN_PROPOSAL       = "SIGN_PROPOSAL"
 	ENDORSEMENT         = "ENDORSEMENT"
 	ENDORSEMENT_AT_PEER = "ENDORSEMENT_AT_PEER"
diff --git a/pkg/infra/observer/benchmark_test.go b/pkg/infra/observer/benchmark_test.go
index d10ba0b0..5ff8c282 100644
--- a/pkg/infra/observer/benchmark_test.go
+++ b/pkg/infra/observer/benchmark_test.go
@@ -61,7 +61,7 @@ func benchmarkNPeer(concurrency int, b *testing.B) {
 	go func() {
 		for i := 0; i < b.N; i++ {
 			uuid, _ := uuid.NewRandom()
-			span := opentracing.GlobalTracer().StartSpan("start transcation process", opentracing.Tag{Key: "txid", Value: uuid.String()})
+			span := opentracing.GlobalTracer().StartSpan("start transaction process", opentracing.Tag{Key: "txid", Value: uuid.String()})
 			ed_span := opentracing.GlobalTracer().StartSpan("endorsement", opentracing.Tag{Key: "txid", Value: uuid.String()})
 			data := &basic.Elements{SignedProp: &peer.SignedProposal{}, TxId: uuid.String(), Span: span, EndorsementSpan: ed_span}
 			for _, s := range signeds {
diff --git a/pkg/infra/observer/block_collector.go b/pkg/infra/observer/block_collector.go
index 6c26578b..bd188e6b 100644
--- a/pkg/infra/observer/block_collector.go
+++ b/pkg/infra/observer/block_collector.go
@@ -138,14 +138,14 @@ func (bc *BlockCollector) commit(block *AddressedBlock) {
 		// committed on all peers, remove from registry
 		// todo: logging
 		// end of from peers
-		// end of transcation creation
+		// end of transaction creation
 		delete(bc.registry, block.Number)
 		for _, b := range block.FilteredBlock.FilteredTransactions {
 			basic.LogEvent(bc.logger, b.Txid, "CommitAtPeers")
 			tapeSpan := basic.GetGlobalSpan()
 			tapeSpan.FinishWithMap(b.Txid, "", basic.COMMIT_AT_ALL_PEERS)
 			if basic.GetMod() == infra.FULLPROCESS {
-				tapeSpan.FinishWithMap(b.Txid, "", basic.TRANSCATION)
+				tapeSpan.FinishWithMap(b.Txid, "", basic.TRANSACTION)
 			}
 		}
 	}
diff --git a/pkg/infra/observer/commitObserver.go b/pkg/infra/observer/commitObserver.go
index 682e04a1..e8a0712c 100644
--- a/pkg/infra/observer/commitObserver.go
+++ b/pkg/infra/observer/commitObserver.go
@@ -113,7 +113,7 @@ func (o *CommitObserver) Start() {
 				tapeSpan.FinishWithMap(txID, "", basic.CONSESUS)
 				var span opentracing.Span
 				if basic.GetMod() == infra.FULLPROCESS {
-					Global_Span := tapeSpan.GetSpan(txID, "", basic.TRANSCATION)
+					Global_Span := tapeSpan.GetSpan(txID, "", basic.TRANSACTION)
 					span = tapeSpan.SpanIntoMap(txID, "", basic.COMMIT_AT_ALL_PEERS, Global_Span)
 				} else {
 					span = tapeSpan.SpanIntoMap(txID, "", basic.COMMIT_AT_ALL_PEERS, nil)
diff --git a/pkg/infra/observer/endorsementObersver.go b/pkg/infra/observer/endorsementObersver.go
index 5422e82f..d4308a27 100644
--- a/pkg/infra/observer/endorsementObersver.go
+++ b/pkg/infra/observer/endorsementObersver.go
@@ -36,7 +36,7 @@ func (o *EndorseObserver) Start() {
 	for {
 		e := <-o.Envs
 		tapeSpan := basic.GetGlobalSpan()
-		tapeSpan.FinishWithMap(e.TxId, "", basic.TRANSCATIONSTART)
+		tapeSpan.FinishWithMap(e.TxId, "", basic.TRANSACTIONSTART)
 		i++
 		fmt.Printf("Time %8.2fs\tTx %6d Processed\n", time.Since(o.Now).Seconds(), i)
 		if o.n > 0 {
diff --git a/pkg/infra/trafficGenerator/broadcaster.go b/pkg/infra/trafficGenerator/broadcaster.go
index 2217e546..fb957f1f 100644
--- a/pkg/infra/trafficGenerator/broadcaster.go
+++ b/pkg/infra/trafficGenerator/broadcaster.go
@@ -74,14 +74,14 @@ func (b *Broadcaster) Start(ctx context.Context, envs <-chan *basic.TracingEnvel
 			span.Finish()
 			e.Span.Finish()
 			if basic.GetMod() == infra.FULLPROCESS {
-				Global_Span := tapeSpan.GetSpan(e.TxId, "", basic.TRANSCATION)
+				Global_Span := tapeSpan.GetSpan(e.TxId, "", basic.TRANSACTION)
 				tapeSpan.SpanIntoMap(e.TxId, "", basic.CONSESUS, Global_Span)
 			} else {
 				tapeSpan.SpanIntoMap(e.TxId, "", basic.CONSESUS, nil)
 			}
 
 			e = nil
-			// end of transcation
+			// end of transaction
 		case <-ctx.Done():
 			return
 		}
diff --git a/pkg/infra/trafficGenerator/proposal.go b/pkg/infra/trafficGenerator/proposal.go
index e92fbf9e..a9679099 100644
--- a/pkg/infra/trafficGenerator/proposal.go
+++ b/pkg/infra/trafficGenerator/proposal.go
@@ -63,10 +63,10 @@ func CreateProposal(signer infra.Crypto, logger *log.Logger, channel, ccname, ve
 	tapeSpan := basic.GetGlobalSpan()
 	var span opentracing.Span
 	if basic.GetMod() == infra.FULLPROCESS {
-		Global_Span := tapeSpan.SpanIntoMap(txid, "", basic.TRANSCATION, nil)
-		span = tapeSpan.MakeSpan(txid, "", basic.TRANSCATIONSTART, Global_Span)
+		Global_Span := tapeSpan.SpanIntoMap(txid, "", basic.TRANSACTION, nil)
+		span = tapeSpan.MakeSpan(txid, "", basic.TRANSACTIONSTART, Global_Span)
 	} else {
-		span = tapeSpan.SpanIntoMap(txid, "", basic.TRANSCATIONSTART, nil)
+		span = tapeSpan.SpanIntoMap(txid, "", basic.TRANSACTIONSTART, nil)
 	}
 	return &basic.TracingProposal{Proposal: prop, TxId: txid, Span: span}, nil
 }
diff --git a/pkg/infra/trafficGenerator/proposer_test.go b/pkg/infra/trafficGenerator/proposer_test.go
index e920764e..30864027 100644
--- a/pkg/infra/trafficGenerator/proposer_test.go
+++ b/pkg/infra/trafficGenerator/proposer_test.go
@@ -83,7 +83,7 @@ var _ = Describe("Proposer", func() {
 			tracer, closer := basic.Init("test")
 			defer closer.Close()
 			opentracing.SetGlobalTracer(tracer)
-			span := opentracing.GlobalTracer().StartSpan("start transcation process")
+			span := opentracing.GlobalTracer().StartSpan("start transaction process")
 			defer span.Finish()
 			peerNum := 2
 			processed = make(chan *basic.Elements, 10)