diff --git a/.gitignore b/.gitignore
index 6605c27..01a7dbf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@
 classes
 
 # go mod, go test
+.go-version
 vendor/
 logs/
 .vscode/
diff --git a/config/graceful_shutdown.go b/config/graceful_shutdown.go
index 6b81c5d..54ed81b 100644
--- a/config/graceful_shutdown.go
+++ b/config/graceful_shutdown.go
@@ -71,7 +71,7 @@
 		filter.Set(constant.GracefulShutdownFilterShutdownConfig, GetShutDown())
 	}
 
-	if GetShutDown().InternalSignal {
+	if GetShutDown().GetInternalSignal() {
 		signals := make(chan os.Signal, 1)
 		signal.Notify(signals, ShutdownSignals...)
 
diff --git a/config/graceful_shutdown_config.go b/config/graceful_shutdown_config.go
index d0779a8..044087b 100644
--- a/config/graceful_shutdown_config.go
+++ b/config/graceful_shutdown_config.go
@@ -66,7 +66,7 @@
 	// when we try to shutdown the applicationConfig, we will reject the new requests. In most cases, you don't need to configure this.
 	RejectRequestHandler string `yaml:"reject-handler" json:"reject-handler,omitempty" property:"reject_handler"`
 	// internal listen kill signal，the default is true.
-	InternalSignal bool `default:"true" yaml:"internal-signal" json:"internal.signal,omitempty" property:"internal.signal"`
+	InternalSignal *bool `default:"true" yaml:"internal-signal" json:"internal.signal,omitempty" property:"internal.signal"`
 	// offline request window length
 	OfflineRequestWindowTimeout string `yaml:"offline-request-window-timeout" json:"offlineRequestWindowTimeout,omitempty" property:"offlineRequestWindowTimeout"`
 	// true -> new request will be rejected.
@@ -124,6 +124,13 @@
 	return result
 }
 
+func (config *ShutdownConfig) GetInternalSignal() bool {
+	if config.InternalSignal == nil {
+		return false
+	}
+	return *config.InternalSignal
+}
+
 func (config *ShutdownConfig) Init() error {
 	return defaults.Set(config)
 }
@@ -157,12 +164,12 @@
 }
 
 func (scb *ShutdownConfigBuilder) SetInternalSignal(internalSignal bool) *ShutdownConfigBuilder {
-	scb.shutdownConfig.InternalSignal = internalSignal
+	scb.shutdownConfig.InternalSignal = &internalSignal
 	return scb
 }
 
 func (scb *ShutdownConfigBuilder) Build() *ShutdownConfig {
-	defaults.Set(scb)
+	defaults.MustSet(scb.shutdownConfig)
 	return scb.shutdownConfig
 }
 
diff --git a/config/graceful_shutdown_config_test.go b/config/graceful_shutdown_config_test.go
index c76098b..fe6890d 100644
--- a/config/graceful_shutdown_config_test.go
+++ b/config/graceful_shutdown_config_test.go
@@ -68,7 +68,7 @@
 		SetOfflineRequestWindowTimeout("13s").
 		SetRejectRequestHandler("handler").
 		SetRejectRequest(true).
-		SetInternalSignal(true).
+		SetInternalSignal(false).
 		Build()
 
 	assert.Equal(t, config.Prefix(), constant.ShutdownConfigPrefix)
@@ -86,4 +86,18 @@
 
 	waitTime := config.GetConsumerUpdateWaitTime()
 	assert.Equal(t, waitTime, 3*time.Second)
+
+	assert.Equal(t, config.GetInternalSignal(), false)
+}
+
+func TestGetInternalSignal(t *testing.T) {
+	config := NewShutDownConfigBuilder().
+		SetTimeout("10s").
+		SetStepTimeout("15s").
+		SetOfflineRequestWindowTimeout("13s").
+		SetRejectRequestHandler("handler").
+		SetRejectRequest(true).
+		Build()
+
+	assert.Equal(t, config.GetInternalSignal(), true)
 }
diff --git a/go.mod b/go.mod
index ceb723c..48b8b7b 100644
--- a/go.mod
+++ b/go.mod
@@ -16,7 +16,7 @@
 	github.com/creasty/defaults v1.5.2
 	github.com/dubbogo/go-zookeeper v1.0.4-0.20211212162352-f9d2183d89d5
 	github.com/dubbogo/gost v1.12.6-0.20220719055648-01d5bc07b111
-	github.com/dubbogo/grpc-go v1.42.9
+	github.com/dubbogo/grpc-go v1.42.10
 	github.com/dubbogo/triple v1.1.8
 	github.com/emicklei/go-restful/v3 v3.8.0
 	github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1
@@ -35,7 +35,7 @@
 	github.com/magiconair/properties v1.8.6
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
-	github.com/nacos-group/nacos-sdk-go v1.1.1
+	github.com/nacos-group/nacos-sdk-go v1.1.2
 	github.com/natefinch/lumberjack v2.0.0+incompatible
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
@@ -45,8 +45,8 @@
 	github.com/stretchr/testify v1.8.0
 	go.etcd.io/etcd/api/v3 v3.5.4
 	go.etcd.io/etcd/client/v3 v3.5.4
-	go.opentelemetry.io/otel v1.8.0
-	go.opentelemetry.io/otel/trace v1.8.0
+	go.opentelemetry.io/otel v1.9.0
+	go.opentelemetry.io/otel/trace v1.9.0
 	go.uber.org/atomic v1.9.0
 	go.uber.org/zap v1.21.0
 	google.golang.org/genproto v0.0.0-20211104193956-4c6863e31247
diff --git a/go.sum b/go.sum
index 874cd6b..a333d6e 100644
--- a/go.sum
+++ b/go.sum
@@ -175,8 +175,9 @@
 github.com/dubbogo/gost v1.11.23/go.mod h1:PhJ8+qZJx+Txjx1KthNPuVkCvUca0jRLgKWj/noGgeI=
 github.com/dubbogo/gost v1.12.6-0.20220719055648-01d5bc07b111 h1:ydfcIHE0slI/R1plWVKaJWpgwo60EuZ5MQyQ3ZiOITQ=
 github.com/dubbogo/gost v1.12.6-0.20220719055648-01d5bc07b111/go.mod h1:f0bcP1xpBUdDgiNjNYKF6F3qlA+RFKs0k980FhoEn/g=
-github.com/dubbogo/grpc-go v1.42.9 h1:nTuglkH9rTJzQfardU4b0OJ0Imd2169dMNLBTNhTdlc=
 github.com/dubbogo/grpc-go v1.42.9/go.mod h1:F1T9hnUvYGW4JLK1QNriavpOkhusU677ovPzLkk6zHM=
+github.com/dubbogo/grpc-go v1.42.10 h1:CoyCdtqKJEar/3rPa6peZbDqYZ/mVsCqAxB6TfTSkhQ=
+github.com/dubbogo/grpc-go v1.42.10/go.mod h1:JMkPt1mIHL96GAFeYsMoMjew6f1ROKycikGzZQH1s5U=
 github.com/dubbogo/jsonparser v1.0.1/go.mod h1:tYAtpctvSP/tWw4MeelsowSPgXQRVHHWbqL6ynps8jU=
 github.com/dubbogo/net v0.0.4/go.mod h1:1CGOnM7X3he+qgGNqjeADuE5vKZQx/eMSeUkpU3ujIc=
 github.com/dubbogo/triple v1.0.9/go.mod h1:1t9me4j4CTvNDcsMZy6/OGarbRyAUSY0tFXGXHCp7Iw=
@@ -200,6 +201,7 @@
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
 github.com/envoyproxy/go-control-plane v0.9.10-0.20210907150352-cf90f659a021/go.mod h1:AFq3mo9L8Lqqiid3OhADV3RfLJnjiw63cSpi+fDTRC0=
 github.com/envoyproxy/go-control-plane v0.10.0/go.mod h1:AY7fTTXNdv/aJ2O5jwpxAPOWUZ7hQAEvzN5Pf27BkQQ=
+github.com/envoyproxy/go-control-plane v0.10.1/go.mod h1:AY7fTTXNdv/aJ2O5jwpxAPOWUZ7hQAEvzN5Pf27BkQQ=
 github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1 h1:xvqufLtNVwAhN8NMyWklVgxnWohi+wtMGQMhtxexlm0=
 github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.mod h1:KJwIaB5Mv44NWtYuAOFCVOjcI94vtpEz2JU/D2v6IjE=
 github.com/envoyproxy/protoc-gen-validate v0.1.0 h1:EQciDnbrYxy13PgWoY8AqoxGiPrpgBZ1R8UNe3ddc+A=
@@ -560,8 +562,8 @@
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nacos-group/nacos-sdk-go v1.0.8/go.mod h1:hlAPn3UdzlxIlSILAyOXKxjFSvDJ9oLzTJ9hLAK1KzA=
-github.com/nacos-group/nacos-sdk-go v1.1.1 h1:beczWcOoTaVBMgCgikqvZflrN5Xbw7pWAWpxl+VJGIA=
-github.com/nacos-group/nacos-sdk-go v1.1.1/go.mod h1:UHOtQNQY/qpk2dhg6gDq8u5+/CEIc3+lWmrmxEzX0/g=
+github.com/nacos-group/nacos-sdk-go v1.1.2 h1:lWTpf5SXLetQetS7p31eGic/ncqsnn0Zbau1i3eC25Y=
+github.com/nacos-group/nacos-sdk-go v1.1.2/go.mod h1:I8Vj4M8ZLpBk7EY2A8RXQE1SbfCA7b56TJBPIFTrUYE=
 github.com/natefinch/lumberjack v2.0.0+incompatible h1:4QJd3OLAMgj7ph+yZTuX13Ld4UpgHp07nNdFX7mqFfM=
 github.com/natefinch/lumberjack v2.0.0+incompatible/go.mod h1:Wi9p2TTF5DG5oU+6YfsmYQpsTIOm0B1VNzQg9Mw6nPk=
 github.com/nats-io/jwt v0.3.0/go.mod h1:fRYCDE99xlTsqUzISS1Bi75UBJ6ljOJQOAAu5VglpSg=
@@ -689,8 +691,9 @@
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
-github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
+github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
+github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
@@ -796,10 +799,10 @@
 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
-go.opentelemetry.io/otel v1.8.0 h1:zcvBFizPbpa1q7FehvFiHbQwGzmPILebO0tyqIR5Djg=
-go.opentelemetry.io/otel v1.8.0/go.mod h1:2pkj+iMj0o03Y+cW6/m8Y4WkRdYN3AvCXCnzRMp9yvM=
-go.opentelemetry.io/otel/trace v1.8.0 h1:cSy0DF9eGI5WIfNwZ1q2iUyGj00tGzP24dE1lOlHrfY=
-go.opentelemetry.io/otel/trace v1.8.0/go.mod h1:0Bt3PXY8w+3pheS3hQUt+wow8b1ojPaTBoTCh2zIFI4=
+go.opentelemetry.io/otel v1.9.0 h1:8WZNQFIB2a71LnANS9JeyidJKKGOOremcUtb/OtHISw=
+go.opentelemetry.io/otel v1.9.0/go.mod h1:np4EoPGzoPs3O67xUVNoPPcmSvsfOxNlNA4F4AC+0Eo=
+go.opentelemetry.io/otel/trace v1.9.0 h1:oZaCNJUjWcg60VXWee8lJKlqhPbXAPB51URuR47pQYc=
+go.opentelemetry.io/otel/trace v1.9.0/go.mod h1:2737Q0MuG8q1uILYm2YYVkAyLtOofiTNGg6VODnOiPo=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
diff --git a/metadata/definition/definition.go b/metadata/definition/definition.go
index f1241d1..2cb11e3 100644
--- a/metadata/definition/definition.go
+++ b/metadata/definition/definition.go
@@ -21,6 +21,7 @@
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"sort"
 	"strings"
 )
 
@@ -70,8 +71,8 @@
 
 // FullServiceDefinition is the describer of service definition with parameters
 type FullServiceDefinition struct {
+	Parameters map[string]string
 	ServiceDefinition
-	Params map[string]string
 }
 
 // MethodDefinition is the describer of method definition
@@ -121,6 +122,56 @@
 	return sd
 }
 
+// BuildFullDefinition can build service definition with full url parameters
+func BuildFullDefinition(service common.Service, url *common.URL) *FullServiceDefinition {
+	fsd := &FullServiceDefinition{}
+	sd := BuildServiceDefinition(service, url)
+	fsd.ServiceDefinition = *sd
+	fsd.Parameters = make(map[string]string)
+	for k, v := range url.GetParams() {
+		fsd.Parameters[k] = strings.Join(v, ",")
+	}
+	return fsd
+}
+
+// ToBytes convert ServiceDefinition to json string
+func (def *FullServiceDefinition) ToBytes() ([]byte, error) {
+	return json.Marshal(def)
+}
+
+// String will iterate all methods and parameters and convert them to json string
+func (def *FullServiceDefinition) String() string {
+	var methodStr strings.Builder
+	for _, m := range def.Methods {
+		var paramType strings.Builder
+		for _, p := range m.ParameterTypes {
+			paramType.WriteString(fmt.Sprintf("{type:%v}", p))
+		}
+		var param strings.Builder
+		for _, d := range m.Parameters {
+			param.WriteString(fmt.Sprintf("{id:%v,type:%v,builderName:%v}", d.ID, d.Type, d.TypeBuilderName))
+		}
+		methodStr.WriteString(fmt.Sprintf("{name:%v,parameterTypes:[%v],returnType:%v,params:[%v] }", m.Name, paramType.String(), m.ReturnType, param.String()))
+	}
+	var types strings.Builder
+	for _, d := range def.Types {
+		types.WriteString(fmt.Sprintf("{id:%v,type:%v,builderName:%v}", d.ID, d.Type, d.TypeBuilderName))
+	}
+
+	sortSlice := make([]string, 0)
+	var parameters strings.Builder
+	for k := range def.Parameters {
+		sortSlice = append(sortSlice, k)
+	}
+	sort.Slice(sortSlice, func(i, j int) bool { return sortSlice[i] < sortSlice[j] })
+	for _, k := range sortSlice {
+		parameters.WriteString(fmt.Sprintf("%v:%v,", k, def.Parameters[k]))
+	}
+
+	return fmt.Sprintf("{parameters:{%v}, canonicalName:%v, codeSource:%v, methods:[%v], types:[%v]}",
+		strings.TrimRight(parameters.String(), ","), def.CanonicalName, def.CodeSource, methodStr.String(), types.String())
+}
+
 // ServiceDescriperBuild builds the service key, format is `group/serviceName:version` which be same as URL's service key
 func ServiceDescriperBuild(serviceName string, group string, version string) string {
 	buf := &bytes.Buffer{}
diff --git a/metadata/definition/definition_test.go b/metadata/definition/definition_test.go
index 6989fb7..7515b09 100644
--- a/metadata/definition/definition_test.go
+++ b/metadata/definition/definition_test.go
@@ -48,4 +48,6 @@
 	service := common.ServiceMap.GetServiceByServiceKey(url.Protocol, url.ServiceKey())
 	sd := BuildServiceDefinition(*service, url)
 	assert.Equal(t, "{canonicalName:com.ikurento.user.UserProvider, codeSource:, methods:[{name:GetUser,parameterTypes:[{type:slice}],returnType:ptr,params:[] }], types:[]}", sd.String())
+	fsd := BuildFullDefinition(*service, url)
+	assert.Equal(t, "{parameters:{anyhost:true,application:BDTService,bean.name:UserProvider,category:providers,default.timeout:10000,dubbo:dubbo-provider-golang-1.0.0,environment:dev,group:group1,interface:com.ikurento.user.UserProvider,ip:192.168.56.1,methods:GetUser,module:dubbogo user-info server,org:ikurento.com,owner:ZX,pid:1447,revision:0.0.1,side:provider,timeout:3000,timestamp:1556509797245,version:0.0.1}, canonicalName:com.ikurento.user.UserProvider, codeSource:, methods:[{name:GetUser,parameterTypes:[{type:slice}],returnType:ptr,params:[] }], types:[]}", fsd.String())
 }
diff --git a/metadata/service/local/service.go b/metadata/service/local/service.go
index 2b2e6ac..aeac070 100644
--- a/metadata/service/local/service.go
+++ b/metadata/service/local/service.go
@@ -202,7 +202,7 @@
 	isGeneric := url.GetParamBool(constant.GenericKey, false)
 	if len(interfaceName) > 0 && !isGeneric {
 		tmpService := common.ServiceMap.GetServiceByServiceKey(url.Protocol, url.ServiceKey())
-		sd := definition.BuildServiceDefinition(*tmpService, url)
+		sd := definition.BuildFullDefinition(*tmpService, url)
 		data, err := sd.ToBytes()
 		if err != nil {
 			logger.Errorf("publishProvider getServiceDescriptor error. providerUrl:%v , error:%v ", url, err)
diff --git a/metadata/service/local/service_test.go b/metadata/service/local/service_test.go
index c3bcc50..031c8a5 100644
--- a/metadata/service/local/service_test.go
+++ b/metadata/service/local/service_test.go
@@ -99,7 +99,14 @@
 	assert.NoError(t, err)
 	err = mts.PublishServiceDefinition(u)
 	assert.NoError(t, err)
-	expected := "{\"CanonicalName\":\"com.ikurento.user.UserProvider\",\"CodeSource\":\"\"," +
+	expected := "{\"Parameters\":{\"anyhost\":\"true\",\"application\":\"BDTService\"," +
+		"\"bean.name\":\"UserProvider\",\"category\":\"providers\",\"default.timeout\":\"10000\"," +
+		"\"dubbo\":\"dubbo-provider-golang-1.0.0\",\"environment\":\"dev\",\"group\":\"group1\"," +
+		"\"interface\":\"com.ikurento.user.UserProvider\",\"ip\":\"192.168.56.1\"," +
+		"\"methods\":\"GetUser\",\"module\":\"dubbogo user-info server\",\"org\":\"ikurento.com\"," +
+		"\"owner\":\"ZX\",\"pid\":\"1447\",\"revision\":\"0.0.1\",\"side\":\"provider\"," +
+		"\"timeout\":\"3000\",\"timestamp\":\"1556509797245\",\"version\":\"0.0.1\"}," +
+		"\"CanonicalName\":\"com.ikurento.user.UserProvider\",\"CodeSource\":\"\"," +
 		"\"Methods\":[{\"Name\":\"GetUser\",\"ParameterTypes\":[\"slice\"],\"ReturnType\":\"ptr\"," +
 		"\"Parameters\":null}],\"Types\":null}"
 	def1, err := mts.GetServiceDefinition(serviceName, group, version)
diff --git a/metadata/service/remote/service.go b/metadata/service/remote/service.go
index aaf6aae..9b2ba39 100644
--- a/metadata/service/remote/service.go
+++ b/metadata/service/remote/service.go
@@ -109,7 +109,7 @@
 	if common.RoleType(common.PROVIDER).Role() == url.GetParam(constant.SideKey, "") {
 		if len(interfaceName) > 0 && !isGeneric {
 			sv := common.ServiceMap.GetServiceByServiceKey(url.Protocol, url.ServiceKey())
-			sd := definition.BuildServiceDefinition(*sv, url)
+			sd := definition.BuildFullDefinition(*sv, url)
 			id := &identifier.MetadataIdentifier{
 				BaseMetadataIdentifier: identifier.BaseMetadataIdentifier{
 					ServiceInterface: interfaceName,
diff --git a/metadata/service/remote/service_test.go b/metadata/service/remote/service_test.go
index ae1eeea..fa4a17e 100644
--- a/metadata/service/remote/service_test.go
+++ b/metadata/service/remote/service_test.go
@@ -146,9 +146,17 @@
 	err = mts.PublishServiceDefinition(u)
 	assert.NoError(t, err)
 
-	expected := "{\"CanonicalName\":\"com.ikurento.user.UserProvider\",\"CodeSource\":\"\"," +
+	expected := "{\"Parameters\":{\"anyhost\":\"true\",\"application\":\"BDTService\"," +
+		"\"bean.name\":\"UserProvider\",\"category\":\"providers\",\"default.timeout\":\"10000\"," +
+		"\"dubbo\":\"dubbo-provider-golang-1.0.0\",\"environment\":\"dev\",\"group\":\"group1\"," +
+		"\"interface\":\"com.ikurento.user.UserProvider\",\"ip\":\"192.168.56.1\"," +
+		"\"methods\":\"GetUser\",\"module\":\"dubbogo user-info server\",\"org\":\"ikurento.com\"," +
+		"\"owner\":\"ZX\",\"pid\":\"1447\",\"revision\":\"0.0.1\",\"side\":\"provider\"," +
+		"\"timeout\":\"3000\",\"timestamp\":\"1556509797245\",\"version\":\"0.0.1\"}," +
+		"\"CanonicalName\":\"com.ikurento.user.UserProvider\",\"CodeSource\":\"\"," +
 		"\"Methods\":[{\"Name\":\"GetUser\",\"ParameterTypes\":[\"slice\"],\"ReturnType\":\"ptr\"," +
 		"\"Parameters\":null}],\"Types\":null}"
+
 	def1, _ := mts.GetServiceDefinition(serviceName, group, version)
 	assert.Equal(t, expected, def1)
 	serviceKey := definition.ServiceDescriperBuild(serviceName, group, version)
diff --git a/registry/polaris/core_test.go b/registry/polaris/core_test.go
index 0e806a3..463d88a 100644
--- a/registry/polaris/core_test.go
+++ b/registry/polaris/core_test.go
@@ -17,6 +17,10 @@
 )
 
 func TestPolarisServiceWatcher_AddSubscriber(t *testing.T) {
+	var (
+		newParam    api.WatchServiceRequest
+		newConsumer api.ConsumerAPI
+	)
 	type fields struct {
 		consumer       api.ConsumerAPI
 		subscribeParam *api.WatchServiceRequest
diff --git a/registry/polaris/registry.go b/registry/polaris/registry.go
index 210c0da..255acdb 100644
--- a/registry/polaris/registry.go
+++ b/registry/polaris/registry.go
@@ -150,8 +150,11 @@
 
 // Subscribe returns nil if subscribing registry successfully. If not returns an error.
 func (pr *polarisRegistry) Subscribe(url *common.URL, notifyListener registry.NotifyListener) error {
-	var newParam api.WatchServiceRequest
-	var newConsumer api.ConsumerAPI
+	var (
+		newParam    api.WatchServiceRequest
+		newConsumer api.ConsumerAPI
+	)
+
 	role, _ := strconv.Atoi(url.GetParam(constant.RegistryRoleKey, ""))
 	if role != common.CONSUMER {
 		return nil