diff --git a/static/js/dashboard.js b/static/js/dashboard.js
index 3e119d6..1493276 100644
--- a/static/js/dashboard.js
+++ b/static/js/dashboard.js
@@ -1038,11 +1038,11 @@ function drawDNSRequestsChart() {
     const chartContext = ctx.getContext('2d');
     
     // 混合视图配置
-      const datasetsConfig = [
-          { label: '24小时', api: (api && api.getHourlyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#3b82f6', fillColor: 'rgba(59, 130, 246, 0.1)' },
-          { label: '7天', api: (api && api.getDailyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#22c55e', fillColor: 'rgba(34, 197, 94, 0.1)' },
-          { label: '30天', api: (api && api.getMonthlyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#a855f7', fillColor: 'rgba(168, 85, 247, 0.1)' }
-      ];
+    const datasetsConfig = [
+        { label: '24小时', api: (api && api.getHourlyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#3b82f6', fillColor: 'rgba(59, 130, 246, 0.1)' },
+        { label: '7天', api: (api && api.getDailyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#22c55e', fillColor: 'rgba(34, 197, 94, 0.1)' },
+        { label: '30天', api: (api && api.getMonthlyStats) || (() => Promise.resolve({ labels: [], data: [] })), color: '#a855f7', fillColor: 'rgba(168, 85, 247, 0.1)' }
+    ];
     
     // 检查是否为混合视图
     if (isMixedView || currentTimeRange === 'mixed') {
@@ -1054,11 +1054,12 @@ function drawDNSRequestsChart() {
         // 获取所有时间范围的数据
         Promise.all(datasetsConfig.map(config => 
             config.api().catch(error => {
-                console.error(`获取${config.label}数据失败，使用模拟数据:`, error);
-                // 返回模拟数据
+                console.error(`获取${config.label}数据失败:`, error);
+                // 返回空数据而不是模拟数据
+                const count = config.label === '24小时' ? 24 : (config.label === '7天' ? 7 : 30);
                 return {
-                    labels: generateTimeLabels(config.label === '24小时' ? 24 : (config.label === '7天' ? 7 : 30)),
-                    data: generateMockData(config.label === '24小时' ? 24 : (config.label === '7天' ? 7 : 30), 100, 1000)
+                    labels: Array(count).fill(''),
+                    data: Array(count).fill(0)
                 };
             })
         )).then(results => {
@@ -1075,7 +1076,7 @@ function drawDNSRequestsChart() {
             
             // 创建或更新图表
             if (dnsRequestsChart) {
-                dnsRequestsChart.data.labels = results[0].labels; // 使用第一个数据集的标签
+                dnsRequestsChart.data.labels = results[0].labels;
                 dnsRequestsChart.data.datasets = datasets;
                 dnsRequestsChart.options.plugins.legend.display = showLegend;
                 // 使用平滑过渡动画更新图表
@@ -1093,7 +1094,6 @@ function drawDNSRequestsChart() {
                     options: {
                         responsive: true,
                         maintainAspectRatio: false,
-                        // 添加动画配置，确保平滑过渡
                         animation: {
                             duration: 800,
                             easing: 'easeInOutQuart'
@@ -1130,6 +1130,7 @@ function drawDNSRequestsChart() {
     } else {
         // 普通视图
         // 根据当前时间范围选择API函数
+        let apiFunction;
         switch (currentTimeRange) {
             case '7d':
                 apiFunction = (api && api.getDailyStats) || (() => Promise.resolve({ labels: [], data: [] }));
@@ -1177,7 +1178,6 @@ function drawDNSRequestsChart() {
                     options: {
                         responsive: true,
                         maintainAspectRatio: false,
-                        // 添加动画配置，确保平滑过渡
                         animation: {
                             duration: 800,
                             easing: 'easeInOutQuart'
@@ -1209,15 +1209,16 @@ function drawDNSRequestsChart() {
             }
         }).catch(error => {
             console.error('绘制DNS请求图表失败:', error);
-            // 使用模拟数据
-            const mockData = {
-                labels: generateTimeLabels(currentTimeRange === '24h' ? 24 : (currentTimeRange === '7d' ? 7 : 30)),
-                data: generateMockData(currentTimeRange === '24h' ? 24 : (currentTimeRange === '7d' ? 7 : 30), 100, 1000)
+            // 错误处理：使用空数据而不是模拟数据
+            const count = currentTimeRange === '24h' ? 24 : (currentTimeRange === '7d' ? 7 : 30);
+            const emptyData = {
+                labels: Array(count).fill(''),
+                data: Array(count).fill(0)
             };
             
             if (dnsRequestsChart) {
-                dnsRequestsChart.data.labels = mockData.labels;
-                dnsRequestsChart.data.datasets[0].data = mockData.data;
+                dnsRequestsChart.data.labels = emptyData.labels;
+                dnsRequestsChart.data.datasets[0].data = emptyData.data;
                 dnsRequestsChart.update();
             }
         });