diff --git a/pkg/rpc/pb/model_metric_item.pb.go b/pkg/rpc/pb/model_metric_item.pb.go
index d377d99..9464ca1 100644
--- a/pkg/rpc/pb/model_metric_item.pb.go
+++ b/pkg/rpc/pb/model_metric_item.pb.go
@@ -31,16 +31,17 @@ type MetricItem struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id         int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	IsOn       bool     `protobuf:"varint,2,opt,name=isOn,proto3" json:"isOn,omitempty"`
-	Code       string   `protobuf:"bytes,3,opt,name=code,proto3" json:"code,omitempty"`
-	Category   string   `protobuf:"bytes,4,opt,name=category,proto3" json:"category,omitempty"`
-	Name       string   `protobuf:"bytes,5,opt,name=name,proto3" json:"name,omitempty"`
-	Keys       []string `protobuf:"bytes,6,rep,name=keys,proto3" json:"keys,omitempty"`
-	Period     int32    `protobuf:"varint,7,opt,name=period,proto3" json:"period,omitempty"`
-	PeriodUnit string   `protobuf:"bytes,8,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
-	Value      string   `protobuf:"bytes,10,opt,name=value,proto3" json:"value,omitempty"`
-	IsPublic   bool     `protobuf:"varint,11,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
+	Id            int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	IsOn          bool     `protobuf:"varint,2,opt,name=isOn,proto3" json:"isOn,omitempty"`
+	Code          string   `protobuf:"bytes,3,opt,name=code,proto3" json:"code,omitempty"`
+	Category      string   `protobuf:"bytes,4,opt,name=category,proto3" json:"category,omitempty"`
+	Name          string   `protobuf:"bytes,5,opt,name=name,proto3" json:"name,omitempty"`
+	Keys          []string `protobuf:"bytes,6,rep,name=keys,proto3" json:"keys,omitempty"`
+	Period        int32    `protobuf:"varint,7,opt,name=period,proto3" json:"period,omitempty"`
+	PeriodUnit    string   `protobuf:"bytes,8,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
+	ExpiresPeriod int32    `protobuf:"varint,12,opt,name=expiresPeriod,proto3" json:"expiresPeriod,omitempty"`
+	Value         string   `protobuf:"bytes,10,opt,name=value,proto3" json:"value,omitempty"`
+	IsPublic      bool     `protobuf:"varint,11,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
 }
 
 func (x *MetricItem) Reset() {
@@ -131,6 +132,13 @@ func (x *MetricItem) GetPeriodUnit() string {
 	return ""
 }
 
+func (x *MetricItem) GetExpiresPeriod() int32 {
+	if x != nil {
+		return x.ExpiresPeriod
+	}
+	return 0
+}
+
 func (x *MetricItem) GetValue() string {
 	if x != nil {
 		return x.Value
@@ -150,7 +158,7 @@ var File_models_model_metric_item_proto protoreflect.FileDescriptor
 var file_models_model_metric_item_proto_rawDesc = []byte{
 	0x0a, 0x1e, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x73, 0x2f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x5f, 0x6d,
 	0x65, 0x74, 0x72, 0x69, 0x63, 0x5f, 0x69, 0x74, 0x65, 0x6d, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
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@@ -162,11 +170,13 @@ var file_models_model_metric_item_proto_rawDesc = []byte{
 	0x16, 0x0a, 0x06, 0x70, 0x65, 0x72, 0x69, 0x6f, 0x64, 0x18, 0x07, 0x20, 0x01, 0x28, 0x05, 0x52,
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 }
 
 var (
diff --git a/pkg/rpc/pb/service_metric_item.pb.go b/pkg/rpc/pb/service_metric_item.pb.go
index 743f05f..6b29392 100644
--- a/pkg/rpc/pb/service_metric_item.pb.go
+++ b/pkg/rpc/pb/service_metric_item.pb.go
@@ -35,14 +35,15 @@ type CreateMetricItemRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Code       string   `protobuf:"bytes,1,opt,name=code,proto3" json:"code,omitempty"`
-	Category   string   `protobuf:"bytes,2,opt,name=category,proto3" json:"category,omitempty"`
-	Name       string   `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
-	Keys       []string `protobuf:"bytes,4,rep,name=keys,proto3" json:"keys,omitempty"`
-	Period     int32    `protobuf:"varint,5,opt,name=period,proto3" json:"period,omitempty"`
-	PeriodUnit string   `protobuf:"bytes,6,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
-	Value      string   `protobuf:"bytes,7,opt,name=value,proto3" json:"value,omitempty"`
-	IsPublic   bool     `protobuf:"varint,8,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
+	Code          string   `protobuf:"bytes,1,opt,name=code,proto3" json:"code,omitempty"`
+	Category      string   `protobuf:"bytes,2,opt,name=category,proto3" json:"category,omitempty"`
+	Name          string   `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
+	Keys          []string `protobuf:"bytes,4,rep,name=keys,proto3" json:"keys,omitempty"`
+	Period        int32    `protobuf:"varint,5,opt,name=period,proto3" json:"period,omitempty"`
+	PeriodUnit    string   `protobuf:"bytes,6,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
+	ExpiresPeriod int32    `protobuf:"varint,9,opt,name=expiresPeriod,proto3" json:"expiresPeriod,omitempty"`
+	Value         string   `protobuf:"bytes,7,opt,name=value,proto3" json:"value,omitempty"`
+	IsPublic      bool     `protobuf:"varint,8,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
 }
 
 func (x *CreateMetricItemRequest) Reset() {
@@ -119,6 +120,13 @@ func (x *CreateMetricItemRequest) GetPeriodUnit() string {
 	return ""
 }
 
+func (x *CreateMetricItemRequest) GetExpiresPeriod() int32 {
+	if x != nil {
+		return x.ExpiresPeriod
+	}
+	return 0
+}
+
 func (x *CreateMetricItemRequest) GetValue() string {
 	if x != nil {
 		return x.Value
@@ -186,14 +194,15 @@ type UpdateMetricItemRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	MetricItemId int64    `protobuf:"varint,1,opt,name=metricItemId,proto3" json:"metricItemId,omitempty"`
-	Name         string   `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
-	Keys         []string `protobuf:"bytes,3,rep,name=keys,proto3" json:"keys,omitempty"`
-	Period       int32    `protobuf:"varint,4,opt,name=period,proto3" json:"period,omitempty"`
-	PeriodUnit   string   `protobuf:"bytes,5,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
-	Value        string   `protobuf:"bytes,6,opt,name=value,proto3" json:"value,omitempty"`
-	IsOn         bool     `protobuf:"varint,7,opt,name=isOn,proto3" json:"isOn,omitempty"`
-	IsPublic     bool     `protobuf:"varint,8,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
+	MetricItemId  int64    `protobuf:"varint,1,opt,name=metricItemId,proto3" json:"metricItemId,omitempty"`
+	Name          string   `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	Keys          []string `protobuf:"bytes,3,rep,name=keys,proto3" json:"keys,omitempty"`
+	Period        int32    `protobuf:"varint,4,opt,name=period,proto3" json:"period,omitempty"`
+	PeriodUnit    string   `protobuf:"bytes,5,opt,name=periodUnit,proto3" json:"periodUnit,omitempty"`
+	ExpiresPeriod int32    `protobuf:"varint,9,opt,name=expiresPeriod,proto3" json:"expiresPeriod,omitempty"`
+	Value         string   `protobuf:"bytes,6,opt,name=value,proto3" json:"value,omitempty"`
+	IsOn          bool     `protobuf:"varint,7,opt,name=isOn,proto3" json:"isOn,omitempty"`
+	IsPublic      bool     `protobuf:"varint,8,opt,name=isPublic,proto3" json:"isPublic,omitempty"`
 }
 
 func (x *UpdateMetricItemRequest) Reset() {
@@ -263,6 +272,13 @@ func (x *UpdateMetricItemRequest) GetPeriodUnit() string {
 	return ""
 }
 
+func (x *UpdateMetricItemRequest) GetExpiresPeriod() int32 {
+	if x != nil {
+		return x.ExpiresPeriod
+	}
+	return 0
+}
+
 func (x *UpdateMetricItemRequest) GetValue() string {
 	if x != nil {
 		return x.Value
@@ -594,7 +610,7 @@ var file_service_metric_item_proto_rawDesc = []byte{
 	0x1e, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x73, 0x2f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x5f, 0x6d, 0x65,
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@@ -605,91 +621,95 @@ var file_service_metric_item_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/pkg/rpc/protos/models/model_metric_item.proto b/pkg/rpc/protos/models/model_metric_item.proto
index d8c1f8a..fa74d1e 100644
--- a/pkg/rpc/protos/models/model_metric_item.proto
+++ b/pkg/rpc/protos/models/model_metric_item.proto
@@ -13,6 +13,7 @@ message MetricItem {
 	repeated string keys = 6;
 	int32 period = 7;
 	string periodUnit = 8;
+	int32 expiresPeriod = 12;
 	string value = 10;
 	bool isPublic = 11;
 }
\ No newline at end of file
diff --git a/pkg/rpc/protos/service_metric_item.proto b/pkg/rpc/protos/service_metric_item.proto
index 15c84de..8ec81a6 100644
--- a/pkg/rpc/protos/service_metric_item.proto
+++ b/pkg/rpc/protos/service_metric_item.proto
@@ -35,6 +35,7 @@ message CreateMetricItemRequest {
 	repeated string keys = 4;
 	int32 period = 5;
 	string periodUnit = 6;
+	int32 expiresPeriod = 9;
 	string value = 7;
 	bool isPublic = 8;
 }
@@ -50,6 +51,7 @@ message UpdateMetricItemRequest {
 	repeated string keys = 3;
 	int32 period = 4;
 	string periodUnit = 5;
+	int32 expiresPeriod = 9;
 	string value = 6;
 	bool isOn = 7;
 	bool isPublic = 8;
diff --git a/pkg/serverconfigs/metric_item_config.go b/pkg/serverconfigs/metric_item_config.go
index a1bbc76..6f7e8cc 100644
--- a/pkg/serverconfigs/metric_item_config.go
+++ b/pkg/serverconfigs/metric_item_config.go
@@ -141,15 +141,35 @@ func (this *MetricItemConfig) ServerExpiresTime() string {
 func (this *MetricItemConfig) ServerExpiresDay() string {
 	switch this.PeriodUnit {
 	case MetricItemPeriodUnitMonth:
-		return timeutil.Format("Ymd", time.Now().AddDate(0, -(this.Period*4), 0))
+		if this.ExpiresPeriod > 0 {
+			return timeutil.Format("Ymd", time.Now().AddDate(0, -this.ExpiresPeriod, 0))
+		} else {
+			return timeutil.Format("Ymd", time.Now().AddDate(0, -(this.Period*4), 0))
+		}
 	case MetricItemPeriodUnitWeek:
-		return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*7*int64(this.Period*5))
+		if this.ExpiresPeriod > 0 {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*7*int64(this.ExpiresPeriod))
+		} else {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*7*int64(this.Period*5))
+		}
 	case MetricItemPeriodUnitDay:
-		return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*int64(this.Period*32))
+		if this.ExpiresPeriod > 0 {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*int64(this.ExpiresPeriod))
+		} else {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-86400*int64(this.Period*32))
+		}
 	case MetricItemPeriodUnitHour:
-		return timeutil.FormatTime("Ymd", time.Now().Unix()-3600*int64(this.Period*25)-86400)
+		if this.ExpiresPeriod > 0 {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-3600*int64(this.ExpiresPeriod)-86400)
+		} else {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-3600*int64(this.Period*25)-86400)
+		}
 	case MetricItemPeriodUnitMinute:
-		return timeutil.FormatTime("Ymd", time.Now().Unix()-60*int64(this.Period*60)-86400)
+		if this.ExpiresPeriod > 0 {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-60*int64(this.ExpiresPeriod)-86400)
+		} else {
+			return timeutil.FormatTime("Ymd", time.Now().Unix()-60*int64(this.Period*60)-86400)
+		}
 	default:
 		return ""
 	}