diff --git a/internal/app.go b/internal/app.go
index 2bfb8e7..073d5f2 100644
--- a/internal/app.go
+++ b/internal/app.go
@@ -358,8 +358,8 @@ func startMetricsMonitoring(ctx context.Context, components *AppComponents, logg
 					continue
 				}
 
-				// 提取 CPU、内存、磁盘使用率
-				var cpuUsage, memoryUsage, diskUsage float64
+				// 提取 CPU、内存、磁盘使用率、网速
+				var cpuUsage, memoryUsage, diskUsage, networkSpeed float64
 
 				if latest.CPU != nil {
 					cpuUsage = latest.CPU.UsagePercent
@@ -373,8 +373,13 @@ func startMetricsMonitoring(ctx context.Context, components *AppComponents, logg
 					diskUsage = latest.Disk.AvgUsagePercent
 				}
 
+				if latest.Network != nil {
+					// 网速 = (发送速率 + 接收速率) / 1024 / 1024 (转换为 MB/s)
+					networkSpeed = float64(latest.Network.TotalBytesSentRate+latest.Network.TotalBytesRecvRate) / 1024 / 1024
+				}
+
 				// 检查告警规则
-				if err := components.AlertService.CheckMetrics(ctx, agent.ID, cpuUsage, memoryUsage, diskUsage); err != nil {
+				if err := components.AlertService.CheckMetrics(ctx, agent.ID, cpuUsage, memoryUsage, diskUsage, networkSpeed); err != nil {
 					logger.Error("检查告警规则失败", zap.String("agentId", agent.ID), zap.Error(err))
 				}
 			}
diff --git a/internal/models/alert.go b/internal/models/alert.go
index a0ad785..bbd3999 100644
--- a/internal/models/alert.go
+++ b/internal/models/alert.go
@@ -30,9 +30,10 @@ type AlertRules struct {
 	DiskThreshold float64 `json:"diskThreshold"` // 磁盘使用率阈值(0-100)
 	DiskDuration  int     `json:"diskDuration"`  // 持续时间（秒）
 
-	// 网络断开告警配置
-	NetworkEnabled  bool `json:"networkEnabled"`  // 是否启用网络断开告警
-	NetworkDuration int  `json:"networkDuration"` // 持续时间（秒）
+	// 网络告警配置
+	NetworkEnabled   bool    `json:"networkEnabled"`   // 是否启用网络告警
+	NetworkThreshold float64 `json:"networkThreshold"` // 网速阈值(MB/s)
+	NetworkDuration  int     `json:"networkDuration"`  // 持续时间（秒）
 
 	// HTTPS 证书告警配置
 	CertEnabled   bool    `json:"certEnabled"`   // 是否启用证书告警
diff --git a/internal/service/alert_service.go b/internal/service/alert_service.go
index cb23a71..d062fc7 100644
--- a/internal/service/alert_service.go
+++ b/internal/service/alert_service.go
@@ -84,7 +84,7 @@ func (s *AlertService) ListAlertRecords(ctx context.Context, agentID string, lim
 }
 
 // CheckMetrics 检查指标并触发告警
-func (s *AlertService) CheckMetrics(ctx context.Context, agentID string, cpu, memory, disk float64) error {
+func (s *AlertService) CheckMetrics(ctx context.Context, agentID string, cpu, memory, disk, networkSpeed float64) error {
 	// 获取全局告警配置
 	globalConfigs, err := s.alertRepo.FindEnabledByAgentID(ctx, "global")
 	if err != nil {
@@ -117,6 +117,11 @@ func (s *AlertService) CheckMetrics(ctx context.Context, agentID string, cpu, me
 		if config.Rules.DiskEnabled {
 			s.checkAlert(ctx, &config, &agent, "disk", disk, config.Rules.DiskThreshold, config.Rules.DiskDuration, now)
 		}
+
+		// 检查网速告警
+		if config.Rules.NetworkEnabled {
+			s.checkAlert(ctx, &config, &agent, "network", networkSpeed, config.Rules.NetworkThreshold, config.Rules.NetworkDuration, now)
+		}
 	}
 
 	return nil
@@ -298,7 +303,11 @@ func (s *AlertService) buildAlertMessage(state *models.AlertState) string {
 	case "disk":
 		alertTypeName = "磁盘使用率"
 	case "network":
-		alertTypeName = "网络连接"
+		return fmt.Sprintf("网速持续%d秒超过%.2fMB/s，当前值%.2fMB/s",
+			state.Duration,
+			state.Threshold,
+			state.Value,
+		)
 	case "cert":
 		return fmt.Sprintf("HTTPS证书剩余天数%.0f天，低于阈值%.0f天", state.Value, state.Threshold)
 	case "service":
diff --git a/web/src/pages/Settings/AlertSettings.tsx b/web/src/pages/Settings/AlertSettings.tsx
index 4cc3510..ce1976a 100644
--- a/web/src/pages/Settings/AlertSettings.tsx
+++ b/web/src/pages/Settings/AlertSettings.tsx
@@ -41,6 +41,7 @@ const AlertSettings = () => {
                     diskThreshold: 85,
                     diskDuration: 60,
                     networkEnabled: false,
+                    networkThreshold: 100,
                     networkDuration: 60,
                     certEnabled: true,
                     certThreshold: 30,
@@ -103,9 +104,10 @@ const AlertSettings = () => {
                     {/*<Divider orientation="left">告警规则</Divider>*/}
 
                     {[
-                        {key: 'cpu', title: 'CPU 告警规则', thresholdLabel: 'CPU 使用率阈值 (%)'},
-                        {key: 'memory', title: '内存告警规则', thresholdLabel: '内存使用率阈值 (%)'},
-                        {key: 'disk', title: '磁盘告警规则', thresholdLabel: '磁盘使用率阈值 (%)'},
+                        {key: 'cpu', title: 'CPU 告警规则', thresholdLabel: 'CPU 使用率阈值 (%)', max: 100},
+                        {key: 'memory', title: '内存告警规则', thresholdLabel: '内存使用率阈值 (%)', max: 100},
+                        {key: 'disk', title: '磁盘告警规则', thresholdLabel: '磁盘使用率阈值 (%)', max: 100},
+                        {key: 'network', title: '网速告警规则', thresholdLabel: '网速阈值 (MB/s)', max: 10000},
                     ].map((rule) => (
                         <Card key={rule.key} title={rule.title} type="inner">
                             <Form.Item noStyle shouldUpdate>
@@ -128,7 +130,7 @@ const AlertSettings = () => {
                                             >
                                                 <InputNumber
                                                     min={0}
-                                                    max={100}
+                                                    max={rule.max}
                                                     style={{width: '100%'}}
                                                     disabled={!enabled}
                                                 />
diff --git a/web/src/types/index.ts b/web/src/types/index.ts
index 24a0e9b..7fb2312 100644
--- a/web/src/types/index.ts
+++ b/web/src/types/index.ts
@@ -406,6 +406,7 @@ export interface AlertRules {
     diskThreshold: number;
     diskDuration: number;
     networkEnabled: boolean;
+    networkThreshold: number;  // 网速阈值(MB/s)
     networkDuration: number;
     certEnabled: boolean;      // HTTPS 证书告警开关
     certThreshold: number;     // 证书剩余天数阈值（天）