diff --git a/src/hooks/useLoadCharts.ts b/src/hooks/useLoadCharts.ts
index be30529..55c9da5 100644
--- a/src/hooks/useLoadCharts.ts
+++ b/src/hooks/useLoadCharts.ts
@@ -118,7 +118,7 @@ export const useLoadCharts = (node: NodeData | null, hours: number) => {
     }));
 
     let filledData;
-    if (hours === 1) {
+    if (hours <= 4) {
       filledData = fillMissingTimePoints(
         stringifiedData,
         minute,
diff --git a/src/pages/instance/PingChart.tsx b/src/pages/instance/PingChart.tsx
index 7ca7d8f..6b3a3be 100644
--- a/src/pages/instance/PingChart.tsx
+++ b/src/pages/instance/PingChart.tsx
@@ -1,4 +1,7 @@
 import { memo, useState, useMemo, useCallback, useEffect } from "react";
+import { Button } from "@/components/ui/button";
+import { useIsMobile } from "@/hooks/useMobile";
+import { Eye, EyeOff } from "lucide-react";
 import {
   LineChart,
   Line,
@@ -35,6 +38,7 @@ const PingChart = memo(({ node, hours }: PingChartProps) => {
     useConfigItem("enableConnectBreaks")
   );
   const maxPointsToRender = useConfigItem("pingChartMaxPoints") || 0; // 0表示不限制
+  const isMobile = useIsMobile();
 
   useEffect(() => {
     if (pingHistory?.tasks) {
@@ -143,6 +147,15 @@ const PingChart = memo(({ node, hours }: PingChartProps) => {
     );
   };
 
+  const handleToggleAll = () => {
+    if (!pingHistory?.tasks) return;
+    if (visiblePingTasks.length === pingHistory.tasks.length) {
+      setVisiblePingTasks([]);
+    } else {
+      setVisiblePingTasks(pingHistory.tasks.map((t) => t.id));
+    }
+  };
+
   const sortedTasks = useMemo(() => {
     if (!pingHistory?.tasks) return [];
     return [...pingHistory.tasks].sort((a, b) => a.name.localeCompare(b.name));
@@ -259,8 +272,8 @@ const PingChart = memo(({ node, hours }: PingChartProps) => {
 
       <Card>
         <CardHeader>
-          <div className="flex justify-between items-start">
-            <div className="flex items-center gap-4">
+          <div className="flex justify-between items-center flex-wrap">
+            <div className="flex gap-4 flex-wrap">
               <div className="flex items-center space-x-2">
                 <Switch
                   id="peak-shaving"
@@ -294,6 +307,22 @@ const PingChart = memo(({ node, hours }: PingChartProps) => {
                 </Tips>
               </div>
             </div>
+            <div className={isMobile ? "w-full mt-2" : ""}>
+              <Button variant="secondary" onClick={handleToggleAll} size="sm">
+                {pingHistory?.tasks &&
+                visiblePingTasks.length === pingHistory.tasks.length ? (
+                  <>
+                    <EyeOff size={16} />
+                    隐藏全部
+                  </>
+                ) : (
+                  <>
+                    <Eye size={16} />
+                    显示全部
+                  </>
+                )}
+              </Button>
+            </div>
           </div>
         </CardHeader>
         <CardContent className="pt-0">
diff --git a/src/pages/instance/index.tsx b/src/pages/instance/index.tsx
index b59d124..214a5a6 100644
--- a/src/pages/instance/index.tsx
+++ b/src/pages/instance/index.tsx
@@ -39,7 +39,7 @@ const InstancePage = () => {
     return [
       { label: "实时", hours: 0 },
       { label: "1小时", hours: 1 },
-      { label: "6小时", hours: 6 },
+      { label: "4小时", hours: 4 },
       { label: "1天", hours: 24 },
       { label: "7天", hours: 168 },
       { label: "30天", hours: 720 },