diff --git a/dtmcli/tcc.go b/dtmcli/tcc.go
index c8618a2..889055a 100644
--- a/dtmcli/tcc.go
+++ b/dtmcli/tcc.go
@@ -58,7 +58,6 @@ func (t *Tcc) CallBranch(body interface{}, tryURL string, confirmURL string, can
 	err := dtmimp.TransRegisterBranch(&t.TransBase, map[string]string{
 		"data":        dtmimp.MustMarshalString(body),
 		"branch_id":   branchID,
-		BranchTry:     tryURL,
 		BranchConfirm: confirmURL,
 		BranchCancel:  cancelURL,
 	}, "registerTccBranch")
diff --git a/dtmgrpc/dtmgimp/dtmgimp.pb.go b/dtmgrpc/dtmgimp/dtmgimp.pb.go
index 9ef264c..e73bc09 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.pb.go
+++ b/dtmgrpc/dtmgimp/dtmgimp.pb.go
@@ -305,9 +305,8 @@ type DtmTccBranchRequest struct {
 
 	Info        *DtmBranchInfo `protobuf:"bytes,1,opt,name=Info,proto3" json:"Info,omitempty"`
 	BusiPayload []byte         `protobuf:"bytes,2,opt,name=BusiPayload,proto3" json:"BusiPayload,omitempty"`
-	Try         string         `protobuf:"bytes,3,opt,name=Try,proto3" json:"Try,omitempty"`
-	Confirm     string         `protobuf:"bytes,4,opt,name=Confirm,proto3" json:"Confirm,omitempty"`
-	Cancel      string         `protobuf:"bytes,5,opt,name=Cancel,proto3" json:"Cancel,omitempty"`
+	Confirm     string         `protobuf:"bytes,3,opt,name=Confirm,proto3" json:"Confirm,omitempty"`
+	Cancel      string         `protobuf:"bytes,4,opt,name=Cancel,proto3" json:"Cancel,omitempty"`
 }
 
 func (x *DtmTccBranchRequest) Reset() {
@@ -356,13 +355,6 @@ func (x *DtmTccBranchRequest) GetBusiPayload() []byte {
 	return nil
 }
 
-func (x *DtmTccBranchRequest) GetTry() string {
-	if x != nil {
-		return x.Try
-	}
-	return ""
-}
-
 func (x *DtmTccBranchRequest) GetConfirm() string {
 	if x != nil {
 		return x.Confirm
@@ -481,52 +473,51 @@ var file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc = []byte{
 	0x44, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x42, 0x72, 0x61, 0x6e, 0x63, 0x68, 0x49,
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 }
 
 var (
diff --git a/dtmgrpc/dtmgimp/dtmgimp.proto b/dtmgrpc/dtmgimp/dtmgimp.proto
index ed32f18..c211841 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.proto
+++ b/dtmgrpc/dtmgimp/dtmgimp.proto
@@ -46,9 +46,8 @@ message DtmBranchInfo {
 message DtmTccBranchRequest {
   DtmBranchInfo Info = 1;
   bytes BusiPayload = 2;
-  string Try = 3;
-  string Confirm = 4;
-  string Cancel = 5;
+  string Confirm = 3;
+  string Cancel = 4;
 }
 
 message DtmXaBranchRequest {
diff --git a/dtmgrpc/tcc.go b/dtmgrpc/tcc.go
index cec9338..298eafd 100644
--- a/dtmgrpc/tcc.go
+++ b/dtmgrpc/tcc.go
@@ -73,7 +73,6 @@ func (t *TccGrpc) CallBranch(busiMsg proto.Message, tryURL string, confirmURL st
 			BranchID:  branchID,
 		},
 		BusiPayload: bd,
-		Try:         tryURL,
 		Confirm:     confirmURL,
 		Cancel:      cancelURL,
 	})
diff --git a/dtmsvr/api.go b/dtmsvr/api.go
index 756d34a..80bb984 100644
--- a/dtmsvr/api.go
+++ b/dtmsvr/api.go
@@ -53,8 +53,8 @@ func svcRegisterTccBranch(branch *TransBranch, data map[string]string) (interfac
 		return map[string]interface{}{"dtm_result": dtmcli.ResultFailure, "message": fmt.Sprintf("current status: %s cannot register branch", dbt.Status)}, nil
 	}
 
-	branches := []TransBranch{*branch, *branch, *branch}
-	for i, b := range []string{dtmcli.BranchCancel, dtmcli.BranchConfirm, dtmcli.BranchTry} {
+	branches := []TransBranch{*branch, *branch}
+	for i, b := range []string{dtmcli.BranchCancel, dtmcli.BranchConfirm} {
 		branches[i].BranchType = b
 		branches[i].URL = data[b]
 	}
diff --git a/dtmsvr/api_grpc.go b/dtmsvr/api_grpc.go
index 8429267..478bb88 100644
--- a/dtmsvr/api_grpc.go
+++ b/dtmsvr/api_grpc.go
@@ -42,7 +42,6 @@ func (s *dtmServer) RegisterTccBranch(ctx context.Context, in *pb.DtmTccBranchRe
 	}, map[string]string{
 		dtmcli.BranchCancel:  in.Cancel,
 		dtmcli.BranchConfirm: in.Confirm,
-		dtmcli.BranchTry:     in.Try,
 	})
 	return &emptypb.Empty{}, dtmgimp.Result2Error(r, err)
 }
diff --git a/test/tcc_barrier_test.go b/test/tcc_barrier_test.go
index 4f511c0..71aff5f 100644
--- a/test/tcc_barrier_test.go
+++ b/test/tcc_barrier_test.go
@@ -28,7 +28,7 @@ func TestTccBarrierNormal(t *testing.T) {
 	assert.Nil(t, err)
 	waitTransProcessed(gid)
 	assert.Equal(t, StatusSucceed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusSucceed}, getBranchesStatus(gid))
 }
 
 func TestTccBarrierRollback(t *testing.T) {
@@ -42,7 +42,7 @@ func TestTccBarrierRollback(t *testing.T) {
 	assert.Error(t, err)
 	waitTransProcessed(gid)
 	assert.Equal(t, StatusFailed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
 }
 
 func TestTccBarrierDisorder(t *testing.T) {
@@ -75,7 +75,6 @@ func TestTccBarrierDisorder(t *testing.T) {
 				"trans_type":         "tcc",
 				"status":             StatusPrepared,
 				"data":               string(dtmimp.MustMarshal(body)),
-				dtmcli.BranchTry:     tryURL,
 				dtmcli.BranchConfirm: confirmURL,
 				dtmcli.BranchCancel:  cancelURL,
 			}).Post(fmt.Sprintf("%s/%s", tcc.Dtm, "registerTccBranch"))
@@ -111,7 +110,7 @@ func TestTccBarrierDisorder(t *testing.T) {
 		return nil, fmt.Errorf("a cancelled tcc")
 	})
 	assert.Error(t, err, fmt.Errorf("a cancelled tcc"))
-	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
 	assert.Equal(t, StatusFailed, getTransStatus(gid))
 }
 
diff --git a/test/tcc_grpc_test.go b/test/tcc_grpc_test.go
index cf5c312..b8726aa 100644
--- a/test/tcc_grpc_test.go
+++ b/test/tcc_grpc_test.go
@@ -24,7 +24,7 @@ func TestTccGrpcNormal(t *testing.T) {
 	assert.Nil(t, err)
 	waitTransProcessed(gid)
 	assert.Equal(t, StatusSucceed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusSucceed}, getBranchesStatus(gid))
 
 }
 
@@ -43,7 +43,7 @@ func TestTccGrpcRollback(t *testing.T) {
 	assert.Equal(t, StatusAborting, getTransStatus(gid))
 	cronTransOnce()
 	assert.Equal(t, StatusFailed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
 }
 
 func TestTccGrpcNested(t *testing.T) {
@@ -58,7 +58,7 @@ func TestTccGrpcNested(t *testing.T) {
 	assert.Nil(t, err)
 	waitTransProcessed(gid)
 	assert.Equal(t, StatusSucceed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusSucceed, StatusPrepared, StatusSucceed}, getBranchesStatus(gid))
 }
 
 func TestTccGrpcType(t *testing.T) {
diff --git a/test/tcc_test.go b/test/tcc_test.go
index 2d19b07..fc40dea 100644
--- a/test/tcc_test.go
+++ b/test/tcc_test.go
@@ -21,7 +21,7 @@ func TestTccNormal(t *testing.T) {
 	assert.Nil(t, err)
 	waitTransProcessed(gid)
 	assert.Equal(t, StatusSucceed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusPrepared, StatusSucceed, StatusPrepared, StatusSucceed}, getBranchesStatus(gid))
 }
 
 func TestTccRollback(t *testing.T) {
@@ -38,5 +38,5 @@ func TestTccRollback(t *testing.T) {
 	assert.Equal(t, StatusAborting, getTransStatus(gid))
 	cronTransOnce()
 	assert.Equal(t, StatusFailed, getTransStatus(gid))
-	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusPrepared, StatusSucceed, StatusPrepared, StatusPrepared}, getBranchesStatus(gid))
+	assert.Equal(t, []string{StatusSucceed, StatusPrepared, StatusSucceed, StatusPrepared}, getBranchesStatus(gid))
 }