diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index 7c033b8..6a89e16 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -509,8 +509,7 @@ namespace JoyD.Windows.CS
             // 添加选择变更事件用于控制画笔大小按钮的显示
             dataGridViewTempDiff.SelectionChanged += new EventHandler(DataGridViewTempDiff_SelectionChanged);
             
-            // 添加一些示例数据
-            AddSampleTempDiffData();
+            // 默认不添加示例数据，保持温差图例为空
         }
         
         private void AddSampleTempDiffData()