diff --git a/model/config.go b/model/config.go
index fb4ad91..c18bb3f 100644
--- a/model/config.go
+++ b/model/config.go
@@ -147,7 +147,7 @@ func (c *Config) Read(path string) error {
 		c.Location = "Asia/Shanghai"
 	}
 	if c.MaxTCPPingValue == 0 {
-		c.MaxTCPPingValue = 300
+		c.MaxTCPPingValue = 1000
 	}
 	if c.AvgPingCount == 0 {
 		c.AvgPingCount = 2
diff --git a/resource/template/theme-default/network.html b/resource/template/theme-default/network.html
index b321eee..77d4f4f 100644
--- a/resource/template/theme-default/network.html
+++ b/resource/template/theme-default/network.html
@@ -30,7 +30,7 @@
     const initData = JSON.parse('{{.Servers}}').servers;
     let MaxTCPPingValue = {{.MaxTCPPingValue}};
     if (MaxTCPPingValue == null) {
-        MaxTCPPingValue = 300;
+        MaxTCPPingValue = 1000;
     }
     new Vue({
         el: '#app',
@@ -77,7 +77,7 @@
                 },
                 dataZoom: [
                     {
-                        start: 94,
+                        start: 0,
                         end: 100
                     }
                 ],
@@ -87,7 +87,7 @@
                 },
                 yAxis: {
                     type: 'value',
-                    boundaryGap: [0, '100%']
+                    boundaryGap: false
                 },
                 series: [],
             },
@@ -178,11 +178,13 @@
                     let loss = 0;
                     let data = [];
                     for (let j = 0; j < monitorInfo.result[i].created_at.length; j++) {
-                        avgDelay = monitorInfo.result[i].avg_delay[j];
+                        avgDelay = Math.round(monitorInfo.result[i].avg_delay[j]);
                         if (avgDelay > 0.9 * MaxTCPPingValue) {
                             loss += 1
                         }
-                        data.push([monitorInfo.result[i].created_at[j], avgDelay]);
+                        if (avgDelay > 0) {
+                            data.push([monitorInfo.result[i].created_at[j], avgDelay]);
+                        }
                     }
                     lossRate = ((loss / monitorInfo.result[i].created_at.length) * 100).toFixed(1);
                     legendName = monitorInfo.result[i].monitor_name +" "+ lossRate + "%";
@@ -192,7 +194,13 @@
                             type: 'line',
                             smooth: true,
                             symbol: 'none',
-                            data: data
+                            data: data,
+                            markPoint: {
+                                data: [
+                                    { type: 'max', symbol: 'pin', name: 'Max', itemStyle: { color: '#f00' } },
+                                    { type: 'min', symbol: 'pin', name: 'Min', itemStyle: { color: '#0f0' } }
+                                ]
+                            }
                     });
                 }
                 this.option.title.text = monitorInfo.result[0].server_name;