diff --git a/internal/db/models/client_browser_dao.go b/internal/db/models/client_browser_dao.go
index eee8b11c..031ac0f9 100644
--- a/internal/db/models/client_browser_dao.go
+++ b/internal/db/models/client_browser_dao.go
@@ -104,6 +104,11 @@ func (this *ClientBrowserDAO) FindBrowserIdWithNameCacheable(tx *dbs.Tx, browser
 
 // CreateBrowser 创建浏览器
 func (this *ClientBrowserDAO) CreateBrowser(tx *dbs.Tx, browserName string) (int64, error) {
+	var maxlength = 50
+	if len(browserName) > maxlength {
+		browserName = browserName[:50]
+	}
+
 	SharedCacheLocker.Lock()
 	defer SharedCacheLocker.Unlock()
 
diff --git a/internal/db/models/client_system_dao.go b/internal/db/models/client_system_dao.go
index c7b7267d..7d86f577 100644
--- a/internal/db/models/client_system_dao.go
+++ b/internal/db/models/client_system_dao.go
@@ -104,6 +104,11 @@ func (this *ClientSystemDAO) FindSystemIdWithNameCacheable(tx *dbs.Tx, systemNam
 
 // CreateSystem 创建浏览器
 func (this *ClientSystemDAO) CreateSystem(tx *dbs.Tx, systemName string) (int64, error) {
+	var maxlength = 50
+	if len(systemName) > maxlength {
+		systemName = systemName[:50]
+	}
+
 	SharedCacheLocker.Lock()
 	defer SharedCacheLocker.Unlock()
 
diff --git a/internal/rpc/services/service_node_cluster_metric_item.go b/internal/rpc/services/service_node_cluster_metric_item.go
index 0f2bb777..e804a718 100644
--- a/internal/rpc/services/service_node_cluster_metric_item.go
+++ b/internal/rpc/services/service_node_cluster_metric_item.go
@@ -23,10 +23,16 @@ func (this *NodeClusterMetricItemService) EnableNodeClusterMetricItem(ctx contex
 	}
 
 	var tx = this.NullTx()
-	err = models.SharedNodeClusterMetricItemDAO.EnableClusterItem(tx, req.NodeClusterId, req.MetricItemId)
+	exists, err := models.SharedNodeClusterMetricItemDAO.ExistsClusterItem(tx, req.NodeClusterId, req.MetricItemId)
 	if err != nil {
 		return nil, err
 	}
+	if !exists {
+		err = models.SharedNodeClusterMetricItemDAO.EnableClusterItem(tx, req.NodeClusterId, req.MetricItemId)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return this.Success()
 }
 
@@ -53,7 +59,7 @@ func (this *NodeClusterMetricItemService) FindAllNodeClusterMetricItems(ctx cont
 	}
 
 	var tx = this.NullTx()
-	clusterItems, err := models.SharedNodeClusterMetricItemDAO.FindAllClusterItems(tx, req.NodeClusterId)
+	clusterItems, err := models.SharedNodeClusterMetricItemDAO.FindAllClusterItems(tx, req.NodeClusterId,  req.Category)
 	if err != nil {
 		return nil, err
 	}
@@ -79,3 +85,18 @@ func (this *NodeClusterMetricItemService) FindAllNodeClusterMetricItems(ctx cont
 	}
 	return &pb.FindAllNodeClusterMetricItemsResponse{MetricItems: pbItems}, nil
 }
+
+// ExistsNodeClusterMetricItem 检查是否已添加某个指标
+func (this *NodeClusterMetricItemService) ExistsNodeClusterMetricItem(ctx context.Context, req *pb.ExistsNodeClusterMetricItemRequest) (*pb.RPCExists, error) {
+	_, err := this.ValidateAdmin(ctx, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	var tx = this.NullTx()
+	b, err := models.SharedNodeClusterMetricItemDAO.ExistsClusterItem(tx, req.NodeClusterId, req.MetricItemId)
+	if err != nil {
+		return nil, err
+	}
+	return this.Exists(b)
+}
diff --git a/internal/rpc/services/service_server_client_browser_monthly_stat.go b/internal/rpc/services/service_server_client_browser_monthly_stat.go
index 439adc86..bdcf1182 100644
--- a/internal/rpc/services/service_server_client_browser_monthly_stat.go
+++ b/internal/rpc/services/service_server_client_browser_monthly_stat.go
@@ -7,12 +7,12 @@ import (
 	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
 )
 
-// 操作系统统计
+// ServerClientBrowserMonthlyStatService 操作系统统计
 type ServerClientBrowserMonthlyStatService struct {
 	BaseService
 }
 
-// 查找前N个操作系统
+// FindTopServerClientBrowserMonthlyStats 查找前N个操作系统
 func (this *ServerClientBrowserMonthlyStatService) FindTopServerClientBrowserMonthlyStats(ctx context.Context, req *pb.FindTopServerClientBrowserMonthlyStatsRequest) (*pb.FindTopServerClientBrowserMonthlyStatsResponse, error) {
 	_, userId, err := this.ValidateAdminAndUser(ctx, 0, 0)
 	if err != nil {
diff --git a/internal/rpc/services/service_server_client_system_monthly_stat.go b/internal/rpc/services/service_server_client_system_monthly_stat.go
index 4c8ae134..86efe68b 100644
--- a/internal/rpc/services/service_server_client_system_monthly_stat.go
+++ b/internal/rpc/services/service_server_client_system_monthly_stat.go
@@ -7,12 +7,12 @@ import (
 	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
 )
 
-// 操作系统统计
+// ServerClientSystemMonthlyStatService 操作系统统计
 type ServerClientSystemMonthlyStatService struct {
 	BaseService
 }
 
-// 查找前N个操作系统
+// FindTopServerClientSystemMonthlyStats 查找前N个操作系统
 func (this *ServerClientSystemMonthlyStatService) FindTopServerClientSystemMonthlyStats(ctx context.Context, req *pb.FindTopServerClientSystemMonthlyStatsRequest) (*pb.FindTopServerClientSystemMonthlyStatsResponse, error) {
 	_, userId, err := this.ValidateAdminAndUser(ctx, 0, 0)
 	if err != nil {