diff --git a/example/protobuf/api.bm.go b/example/protobuf/api.bm.go
index 4e29bad26..6e3ce12a7 100644
--- a/example/protobuf/api.bm.go
+++ b/example/protobuf/api.bm.go
@@ -9,6 +9,7 @@ import (
 	bm "github.com/bilibili/kratos/pkg/net/http/blademaster"
 	"github.com/bilibili/kratos/pkg/net/http/blademaster/binding"
 )
+import google_protobuf1 "github.com/golang/protobuf/ptypes/empty"
 
 // to suppressed 'imported but not used warning'
 var _ *bm.Context
@@ -16,10 +17,13 @@ var _ context.Context
 var _ binding.StructValidator
 
 var PathUserInfo = "/user.api.User/Info"
+var PathUserCard = "/user.api.User/Card"
 
 // UserBMServer is the server API for User service.
 type UserBMServer interface {
 	Info(ctx context.Context, req *UserReq) (resp *InfoReply, err error)
+
+	Card(ctx context.Context, req *UserReq) (resp *google_protobuf1.Empty, err error)
 }
 
 var UserSvc UserBMServer
@@ -33,8 +37,18 @@ func userInfo(c *bm.Context) {
 	c.JSON(resp, err)
 }
 
+func userCard(c *bm.Context) {
+	p := new(UserReq)
+	if err := c.BindWith(p, binding.Default(c.Request.Method, c.Request.Header.Get("Content-Type"))); err != nil {
+		return
+	}
+	resp, err := UserSvc.Card(c, p)
+	c.JSON(resp, err)
+}
+
 // RegisterUserBMServer Register the blademaster route
 func RegisterUserBMServer(e *bm.Engine, server UserBMServer) {
 	UserSvc = server
 	e.GET("/user.api.User/Info", userInfo)
+	e.GET("/user.api.User/Card", userCard)
 }
diff --git a/example/protobuf/api.proto b/example/protobuf/api.proto
index ef3d04abd..23f65d47d 100644
--- a/example/protobuf/api.proto
+++ b/example/protobuf/api.proto
@@ -3,6 +3,7 @@ syntax = "proto3";
 package user.api;
 
 import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "google/protobuf/empty.proto";
 
 option go_package = "api";
 
@@ -30,4 +31,5 @@ message InfoReply {
 
 service User {
   rpc Info(UserReq) returns (InfoReply);
+  rpc Card(UserReq) returns (google.protobuf.Empty);
 }
diff --git a/tool/protobuf/protoc-gen-bm/generator/generator.go b/tool/protobuf/protoc-gen-bm/generator/generator.go
index ca9a06b50..19c325bfe 100644
--- a/tool/protobuf/protoc-gen-bm/generator/generator.go
+++ b/tool/protobuf/protoc-gen-bm/generator/generator.go
@@ -125,18 +125,7 @@ func (t *bm) generateImports(file *descriptor.FileDescriptorProto) {
 	deps := make(map[string]string) // Map of package name to quoted import path.
 	deps = t.DeduceDeps(file)
 	for pkg, importPath := range deps {
-		for _, service := range file.Service {
-			for _, method := range service.Method {
-				inputType := t.GoTypeName(method.GetInputType())
-				outputType := t.GoTypeName(method.GetOutputType())
-				if strings.HasPrefix(pkg, outputType) || strings.HasPrefix(pkg, inputType) {
-					t.P(`import `, pkg, ` `, importPath)
-				}
-			}
-		}
-	}
-	if len(deps) > 0 {
-		t.P()
+		t.P(`import `, pkg, ` `, importPath)
 	}
 	t.P()
 	t.P(`// to suppressed 'imported but not used warning'`)