diff --git a/internal/db/models/stats/node_cluster_traffic_daily_stat_dao.go b/internal/db/models/stats/node_cluster_traffic_daily_stat_dao.go
index 743d3a3e..7f146c89 100644
--- a/internal/db/models/stats/node_cluster_traffic_daily_stat_dao.go
+++ b/internal/db/models/stats/node_cluster_traffic_daily_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedNodeClusterTrafficDailyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedNodeClusterTrafficDailyStatDAO.Clean(nil, 30) // 只保留N天
 				if err != nil {
 					remotelogs.Error("NodeClusterTrafficDailyStatDAO", "clean expired data failed: "+err.Error())
 				}
diff --git a/internal/db/models/stats/node_traffic_daily_stat_dao.go b/internal/db/models/stats/node_traffic_daily_stat_dao.go
index ad4de326..c92ec03c 100644
--- a/internal/db/models/stats/node_traffic_daily_stat_dao.go
+++ b/internal/db/models/stats/node_traffic_daily_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedNodeTrafficDailyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedNodeTrafficDailyStatDAO.Clean(nil, 30) // 只保留N天
 				if err != nil {
 					remotelogs.Error("NodeTrafficDailyStatDAO", "clean expired data failed: "+err.Error())
 				}
diff --git a/internal/db/models/stats/node_traffic_hourly_stat_dao.go b/internal/db/models/stats/node_traffic_hourly_stat_dao.go
index ad5ec827..91af098e 100644
--- a/internal/db/models/stats/node_traffic_hourly_stat_dao.go
+++ b/internal/db/models/stats/node_traffic_hourly_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedNodeTrafficHourlyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedNodeTrafficHourlyStatDAO.Clean(nil, 15) // 只保留N天
 				if err != nil {
 					remotelogs.Error("NodeTrafficHourlyStatDAO", "clean expired data failed: "+err.Error())
 				}
diff --git a/internal/db/models/stats/server_http_firewall_hourly_stat_dao.go b/internal/db/models/stats/server_http_firewall_hourly_stat_dao.go
index eb0e2b3c..d02ef603 100644
--- a/internal/db/models/stats/server_http_firewall_hourly_stat_dao.go
+++ b/internal/db/models/stats/server_http_firewall_hourly_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedServerHTTPFirewallHourlyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedServerHTTPFirewallHourlyStatDAO.Clean(nil, 15) // 只保留N天
 				if err != nil {
 					remotelogs.Error("ServerHTTPFirewallHourlyStatDAO", "clean expired data failed: "+err.Error())
 				}
diff --git a/internal/db/models/stats/traffic_daily_stat_dao.go b/internal/db/models/stats/traffic_daily_stat_dao.go
index 71b67028..8db6aabb 100644
--- a/internal/db/models/stats/traffic_daily_stat_dao.go
+++ b/internal/db/models/stats/traffic_daily_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedTrafficDailyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedTrafficDailyStatDAO.Clean(nil, 30) // 只保留N天
 				if err != nil {
 					remotelogs.Error("TrafficDailyStatDAO", "clean expired data failed: "+err.Error())
 				}
diff --git a/internal/db/models/stats/traffic_hourly_stat_dao.go b/internal/db/models/stats/traffic_hourly_stat_dao.go
index e762d400..db5dd539 100644
--- a/internal/db/models/stats/traffic_hourly_stat_dao.go
+++ b/internal/db/models/stats/traffic_hourly_stat_dao.go
@@ -21,7 +21,7 @@ func init() {
 		var ticker = time.NewTicker(time.Duration(rands.Int(24, 48)) * time.Hour)
 		go func() {
 			for range ticker.C {
-				err := SharedTrafficHourlyStatDAO.Clean(nil, 60) // 只保留60天
+				err := SharedTrafficHourlyStatDAO.Clean(nil, 15) // 只保留N天
 				if err != nil {
 					remotelogs.Error("TrafficHourlyStatDAO", "clean expired data failed: "+err.Error())
 				}