diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index abf177a..8098556 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -532,14 +532,23 @@ namespace JoyD.Windows.CS
         {
             try
             {
-                // 添加新的温差图例
-                AddTempDiffRow();
+                // 添加新的温差图例，提供默认值和颜色
+                int defaultTemp = tempDiffData.Count > 0 ? tempDiffData.Count * 10 : 10;
+                Color defaultColor = GetNextDefaultColor(tempDiffData.Count);
+                AddTempDiffRow($"{defaultTemp}°C", defaultColor);
             }
             catch (Exception ex)
             {
                 Console.WriteLine("添加温差图例失败: " + ex.Message);
             }
         }
+        
+        // 获取下一个默认颜色
+        private Color GetNextDefaultColor(int index)
+        {
+            Color[] colors = { Color.Blue, Color.Green, Color.Red, Color.Yellow, Color.Purple, Color.Orange, Color.Pink, Color.Cyan };
+            return colors[index % colors.Length];
+        }
 
         /// <summary>
         /// 删除温差图例按钮点击事件