diff --git a/internal/db/models/metric_stat_dao.go b/internal/db/models/metric_stat_dao.go
index 69089223..97c6d6d9 100644
--- a/internal/db/models/metric_stat_dao.go
+++ b/internal/db/models/metric_stat_dao.go
@@ -13,8 +13,10 @@ import (
 	"github.com/iwind/TeaGo/rands"
 	"github.com/iwind/TeaGo/types"
 	timeutil "github.com/iwind/TeaGo/utils/time"
+	"regexp"
 	"sort"
 	"strconv"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -39,6 +41,8 @@ func init() {
 
 const MetricStatTablePartials = 20 // 表格Partial数量
 
+var metricHashRegexp = regexp.MustCompile(`^\w+$`)
+
 func NewMetricStatDAO() *MetricStatDAO {
 	return dbs.NewDAO(&MetricStatDAO{
 		DAOObject: dbs.DAOObject{
@@ -123,18 +127,30 @@ func (this *MetricStatDAO) DeleteItemStats(tx *dbs.Tx, itemId int64) error {
 }
 
 // DeleteNodeItemStats 删除某个节点的统计数据
-func (this *MetricStatDAO) DeleteNodeItemStats(tx *dbs.Tx, nodeId int64, serverId int64, itemId int64, time string) error {
+func (this *MetricStatDAO) DeleteNodeItemStats(tx *dbs.Tx, nodeId int64, serverId int64, itemId int64, time string, keepKeys []string) error {
 	if serverId > 0 {
-		_, err := this.Query(tx).
+		var query = this.Query(tx).
 			Table(this.partialTable(serverId)).
 			Attr("nodeId", nodeId).
 			Attr("serverId", serverId).
 			Attr("itemId", itemId).
-			Attr("time", time).
-			Delete()
-		if this.canIgnore(err) {
+			Attr("time", time)
+		if len(keepKeys) > 0 {
+			query.Reuse(false)
+			var s []string
+			for _, k := range keepKeys {
+				if metricHashRegexp.MatchString(k) {
+					s = append(s, "'"+k+"@"+types.String(nodeId)+"'")
+				}
+			}
+			query.Where("hash NOT IN (" + strings.Join(s, ",") + ")")
+		}
+		err := query.
+			DeleteQuickly()
+		if err == nil || this.canIgnore(err) {
 			return nil
 		}
+
 		return err
 	}
 
diff --git a/internal/db/models/metric_stat_dao_test.go b/internal/db/models/metric_stat_dao_test.go
index 783e2b4f..d94b745c 100644
--- a/internal/db/models/metric_stat_dao_test.go
+++ b/internal/db/models/metric_stat_dao_test.go
@@ -41,7 +41,7 @@ func TestMetricStatDAO_DeleteNodeItemStats(t *testing.T) {
 	defer func() {
 		t.Log(time.Since(before).Seconds()*1000, "ms")
 	}()
-	err := dao.DeleteNodeItemStats(nil, 1, 0, 1, timeutil.Format("Ymd"))
+	err := dao.DeleteNodeItemStats(nil, 1, 0, 1, timeutil.Format("Ymd"), nil)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/internal/rpc/services/service_metric_stat.go b/internal/rpc/services/service_metric_stat.go
index 350c8995..aec7fed1 100644
--- a/internal/rpc/services/service_metric_stat.go
+++ b/internal/rpc/services/service_metric_stat.go
@@ -71,16 +71,18 @@ func init() {
 						}()
 					}
 
-					err = models.SharedMetricStatDAO.DeleteNodeItemStats(tx, nodeId, serverId, itemId, req.Time)
-					if err != nil {
-						return err
-					}
-
-					for _, stat := range req.MetricStats {
-						err := models.SharedMetricStatDAO.CreateStat(tx, stat.Hash, clusterId, nodeId, req.ServerId, req.ItemId, stat.Keys, float64(stat.Value), req.Time, req.Version)
+					if len(req.MetricStats) > 0 {
+						err = models.SharedMetricStatDAO.DeleteNodeItemStats(tx, nodeId, serverId, itemId, req.Time, req.KeepKeys)
 						if err != nil {
 							return err
 						}
+
+						for _, stat := range req.MetricStats {
+							err = models.SharedMetricStatDAO.CreateStat(tx, stat.Hash, clusterId, nodeId, req.ServerId, req.ItemId, stat.Keys, float64(stat.Value), req.Time, req.Version)
+							if err != nil {
+								return err
+							}
+						}
 					}
 
 					// 保存总和