diff --git a/api/grpc/pola.pb.go b/api/grpc/pola.pb.go
index 1962267..1a08360 100644
--- a/api/grpc/pola.pb.go
+++ b/api/grpc/pola.pb.go
@@ -190,10 +190,11 @@ type SrPolicy struct {
 	SrcRouterId     string       `protobuf:"bytes,4,opt,name=srcRouterId,proto3" json:"srcRouterId,omitempty"`
 	DstRouterId     string       `protobuf:"bytes,5,opt,name=dstRouterId,proto3" json:"dstRouterId,omitempty"`
 	Color           uint32       `protobuf:"varint,6,opt,name=color,proto3" json:"color,omitempty"`
-	PolicyName      string       `protobuf:"bytes,7,opt,name=policyName,proto3" json:"policyName,omitempty"`
-	Type            SrPolicyType `protobuf:"varint,8,opt,name=type,proto3,enum=pb.SrPolicyType" json:"type,omitempty"`
-	SegmentList     []*Segment   `protobuf:"bytes,9,rep,name=segmentList,proto3" json:"segmentList,omitempty"`
-	Metric          MetricType   `protobuf:"varint,10,opt,name=metric,proto3,enum=pb.MetricType" json:"metric,omitempty"`
+	Preference      uint32       `protobuf:"varint,7,opt,name=preference,proto3" json:"preference,omitempty"`
+	PolicyName      string       `protobuf:"bytes,8,opt,name=policyName,proto3" json:"policyName,omitempty"`
+	Type            SrPolicyType `protobuf:"varint,9,opt,name=type,proto3,enum=pb.SrPolicyType" json:"type,omitempty"`
+	SegmentList     []*Segment   `protobuf:"bytes,10,rep,name=segmentList,proto3" json:"segmentList,omitempty"`
+	Metric          MetricType   `protobuf:"varint,11,opt,name=metric,proto3,enum=pb.MetricType" json:"metric,omitempty"`
 }
 
 func (x *SrPolicy) Reset() {
@@ -270,6 +271,13 @@ func (x *SrPolicy) GetColor() uint32 {
 	return 0
 }
 
+func (x *SrPolicy) GetPreference() uint32 {
+	if x != nil {
+		return x.Preference
+	}
+	return 0
+}
+
 func (x *SrPolicy) GetPolicyName() string {
 	if x != nil {
 		return x.PolicyName
@@ -874,7 +882,7 @@ var file_pola_proto_rawDesc = []byte{
 	0x07, 0x53, 0x65, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x12, 0x10, 0x0a, 0x03, 0x73, 0x69, 0x64, 0x18,
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 	0x28, 0x0a, 0x0f, 0x70, 0x63, 0x65, 0x70, 0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x41, 0x64,
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@@ -886,15 +894,17 @@ var file_pola_proto_rawDesc = []byte{
 	0x20, 0x0a, 0x0b, 0x64, 0x73, 0x74, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x49, 0x64, 0x18, 0x05,
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diff --git a/api/grpc/pola.proto b/api/grpc/pola.proto
index 23df1be..1dc0963 100644
--- a/api/grpc/pola.proto
+++ b/api/grpc/pola.proto
@@ -40,10 +40,11 @@ message SrPolicy {
     string srcRouterId = 4;
     string dstRouterId = 5;
     uint32 color = 6;
-    string policyName = 7;
-    SrPolicyType type = 8;
-    repeated Segment segmentList = 9;
-    MetricType metric = 10;
+    uint32 preference = 7;
+    string policyName = 8;
+    SrPolicyType type = 9;
+    repeated Segment segmentList = 10;
+    MetricType metric = 11;
 }
 
 message CreateSrPolicyInput {