diff --git a/dtmgrpc/dtmgimp/dtmgimp.pb.go b/dtmgrpc/dtmgimp/dtmgimp.pb.go
index a0b5e21..80dbb14 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.pb.go
+++ b/dtmgrpc/dtmgimp/dtmgimp.pb.go
@@ -227,44 +227,6 @@ func (x *DtmGidReply) GetGid() string {
 	return ""
 }
 
-type DtmBranchInfo struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *DtmBranchInfo) Reset() {
-	*x = DtmBranchInfo{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *DtmBranchInfo) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*DtmBranchInfo) ProtoMessage() {}
-
-func (x *DtmBranchInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use DtmBranchInfo.ProtoReflect.Descriptor instead.
-func (*DtmBranchInfo) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{3}
-}
-
 type DtmBranchRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -281,7 +243,7 @@ type DtmBranchRequest struct {
 func (x *DtmBranchRequest) Reset() {
 	*x = DtmBranchRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[4]
+		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -294,7 +256,7 @@ func (x *DtmBranchRequest) String() string {
 func (*DtmBranchRequest) ProtoMessage() {}
 
 func (x *DtmBranchRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[4]
+	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -307,7 +269,7 @@ func (x *DtmBranchRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DtmBranchRequest.ProtoReflect.Descriptor instead.
 func (*DtmBranchRequest) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{4}
+	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *DtmBranchRequest) GetGid() string {
@@ -331,7 +293,7 @@ func (x *DtmBranchRequest) GetBranchID() string {
 	return ""
 }
 
-func (x *DtmBranchRequest) GetBranchType() string {
+func (x *DtmBranchRequest) GetOp() string {
 	if x != nil {
 		return x.Op
 	}
@@ -385,47 +347,44 @@ var file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc = []byte{
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+	0x6f, 0x33,
 }
 
 var (
@@ -440,29 +399,28 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP() []byte {
 	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescData
 }
 
-var file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_dtmgrpc_dtmgimp_dtmgimp_proto_goTypes = []interface{}{
 	(*DtmTransOptions)(nil),  // 0: dtmgimp.DtmTransOptions
 	(*DtmRequest)(nil),       // 1: dtmgimp.DtmRequest
 	(*DtmGidReply)(nil),      // 2: dtmgimp.DtmGidReply
-	(*DtmBranchInfo)(nil),    // 3: dtmgimp.DtmBranchInfo
-	(*DtmBranchRequest)(nil), // 4: dtmgimp.DtmBranchRequest
-	nil,                      // 5: dtmgimp.DtmBranchRequest.DataEntry
-	(*emptypb.Empty)(nil),    // 6: google.protobuf.Empty
+	(*DtmBranchRequest)(nil), // 3: dtmgimp.DtmBranchRequest
+	nil,                      // 4: dtmgimp.DtmBranchRequest.DataEntry
+	(*emptypb.Empty)(nil),    // 5: google.protobuf.Empty
 }
 var file_dtmgrpc_dtmgimp_dtmgimp_proto_depIdxs = []int32{
 	0, // 0: dtmgimp.DtmRequest.TransOptions:type_name -> dtmgimp.DtmTransOptions
-	5, // 1: dtmgimp.DtmBranchRequest.Data:type_name -> dtmgimp.DtmBranchRequest.DataEntry
-	6, // 2: dtmgimp.Dtm.NewGid:input_type -> google.protobuf.Empty
+	4, // 1: dtmgimp.DtmBranchRequest.Data:type_name -> dtmgimp.DtmBranchRequest.DataEntry
+	5, // 2: dtmgimp.Dtm.NewGid:input_type -> google.protobuf.Empty
 	1, // 3: dtmgimp.Dtm.Submit:input_type -> dtmgimp.DtmRequest
 	1, // 4: dtmgimp.Dtm.Prepare:input_type -> dtmgimp.DtmRequest
 	1, // 5: dtmgimp.Dtm.Abort:input_type -> dtmgimp.DtmRequest
-	4, // 6: dtmgimp.Dtm.RegisterBranch:input_type -> dtmgimp.DtmBranchRequest
+	3, // 6: dtmgimp.Dtm.RegisterBranch:input_type -> dtmgimp.DtmBranchRequest
 	2, // 7: dtmgimp.Dtm.NewGid:output_type -> dtmgimp.DtmGidReply
-	6, // 8: dtmgimp.Dtm.Submit:output_type -> google.protobuf.Empty
-	6, // 9: dtmgimp.Dtm.Prepare:output_type -> google.protobuf.Empty
-	6, // 10: dtmgimp.Dtm.Abort:output_type -> google.protobuf.Empty
-	6, // 11: dtmgimp.Dtm.RegisterBranch:output_type -> google.protobuf.Empty
+	5, // 8: dtmgimp.Dtm.Submit:output_type -> google.protobuf.Empty
+	5, // 9: dtmgimp.Dtm.Prepare:output_type -> google.protobuf.Empty
+	5, // 10: dtmgimp.Dtm.Abort:output_type -> google.protobuf.Empty
+	5, // 11: dtmgimp.Dtm.RegisterBranch:output_type -> google.protobuf.Empty
 	7, // [7:12] is the sub-list for method output_type
 	2, // [2:7] is the sub-list for method input_type
 	2, // [2:2] is the sub-list for extension type_name
@@ -513,18 +471,6 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 			}
 		}
 		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DtmBranchInfo); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DtmBranchRequest); i {
 			case 0:
 				return &v.state
@@ -543,7 +489,7 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/dtmgrpc/dtmgimp/dtmgimp.proto b/dtmgrpc/dtmgimp/dtmgimp.proto
index ef2479e..a6ef5e6 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.proto
+++ b/dtmgrpc/dtmgimp/dtmgimp.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-option go_package = "github.com/yedf/dtm/dtmgrpc/dtmgimp";
+option go_package = "./dtmgimp";
 import "google/protobuf/empty.proto";
 
 package dtmgimp;
diff --git a/examples/busi.pb.go b/examples/busi.pb.go
index cbf37b7..c27b3df 100644
--- a/examples/busi.pb.go
+++ b/examples/busi.pb.go
@@ -164,10 +164,8 @@ var file_examples_busi_proto_rawDesc = []byte{
 	0x75, 0x74, 0x52, 0x65, 0x76, 0x65, 0x72, 0x74, 0x42, 0x53, 0x61, 0x67, 0x61, 0x12, 0x11, 0x2e,
 	0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2e, 0x42, 0x75, 0x73, 0x69, 0x52, 0x65, 0x71,
 	0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62,
-	0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x22, 0x00, 0x42, 0x1e, 0x5a, 0x1c, 0x67, 0x69,
-	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x79, 0x65, 0x64, 0x66, 0x2f, 0x64, 0x74,
-	0x6d, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
-	0x6f, 0x33,
+	0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x22, 0x00, 0x42, 0x0c, 0x5a, 0x0a, 0x2e, 0x2f,
+	0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/examples/busi.proto b/examples/busi.proto
index afed6b4..9ae5f1c 100644
--- a/examples/busi.proto
+++ b/examples/busi.proto
@@ -3,7 +3,7 @@ syntax = "proto3";
 package examples;
 import "google/protobuf/empty.proto";
 
-option go_package = "github.com/yedf/dtm/examples";
+option go_package = "./examples";
 
 // DtmRequest request sent to dtm server
 message BusiReq {