diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index 42f434d..8b731b0 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -721,7 +721,18 @@ function initDetailedCharts() {
                     },
                     tooltip: {
                         mode: 'index',
-                        intersect: false
+                        intersect: false,
+                        callbacks: {
+                            label: function(context) {
+                                const label = context.dataset.label || '';
+                                const value = context.parsed.y;
+                                // 第二行显示实际值
+                                return [
+                                    `${label}: ${value}%`,
+                                    `实际值: ${value}%`
+                                ];
+                            }
+                        }
                     },
                     zoom: {
                         pan: {
@@ -780,7 +791,18 @@ function initDetailedCharts() {
                     },
                     tooltip: {
                         mode: 'index',
-                        intersect: false
+                        intersect: false,
+                        callbacks: {
+                            label: function(context) {
+                                const label = context.dataset.label || '';
+                                const value = context.parsed.y;
+                                // 第二行显示实际值
+                                return [
+                                    `${label}: ${value}%`,
+                                    `实际值: ${value}%`
+                                ];
+                            }
+                        }
                     },
                     zoom: {
                         pan: {
@@ -862,7 +884,19 @@ function initDetailedCharts() {
                     },
                     tooltip: {
                         mode: 'index',
-                        intersect: false
+                        intersect: false,
+                        callbacks: {
+                            label: function(context) {
+                                const label = context.dataset.label || '';
+                                const value = context.parsed.y;
+                                const rawValue = context.raw.y;
+                                // 第二行显示实际值
+                                return [
+                                    `${label}: ${value} MB`,
+                                    `实际值: ${rawValue} MB`
+                                ];
+                            }
+                        }
                     },
                     zoom: {
                         pan: {
@@ -943,7 +977,19 @@ function initDetailedCharts() {
                     },
                     tooltip: {
                         mode: 'index',
-                        intersect: false
+                        intersect: false,
+                        callbacks: {
+                            label: function(context) {
+                                const label = context.dataset.label || '';
+                                const value = context.parsed.y;
+                                const rawValue = context.raw.y;
+                                // 第二行显示实际值
+                                return [
+                                    `${label}: ${value} MB/s`,
+                                    `实际值: ${rawValue} MB/s`
+                                ];
+                            }
+                        }
                     },
                     zoom: {
                         pan: {