diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index 7d03a7d..3ac05bb 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -276,7 +276,9 @@
                 _chartInstances[id].cpu = new MiniChart(id+'-cpu', '#7aa2f7'); _chartInstances[id].mem = new MiniChart(id+'-mem', '#9ece6a'); _hires(_chartInstances[id].mem);
               }
               if (typeof DualLineChart !== 'undefined') {
-                _chartInstances[id].net = new DualLineChart(id+'-net', '#bb9af7', '#c0a8f0');
+                _chartInstances[id].net = new DualLineChart(id+'-net', '#7c3aed', '#a78bfa');
+                // 默认设一些初始数据让线可见
+                for (var _i=0; _i<10; _i++) _chartInstances[id].net.update(5000, 3000);
                 
               }
             } catch(e) {}