diff --git a/Cad/BlockRawFreeForgeNoRoundHeadDrawer.cs b/Cad/BlockRawFreeForgeNoRoundHeadDrawer.cs
index 7082461..66cfab2 100644
--- a/Cad/BlockRawFreeForgeNoRoundHeadDrawer.cs
+++ b/Cad/BlockRawFreeForgeNoRoundHeadDrawer.cs
@@ -288,21 +288,21 @@ namespace CadParamPluging.Cad
                 }
             }
 
-            // 9. 硬度符号 - 从剖面底部引出
+            // 9. 硬度符号 - 从剖面右侧引出
             var hardnessVal = bag.GetString(FeatureDrivenDrawer.KeyHardness);
             if (!string.IsNullOrWhiteSpace(hardnessVal))
             {
-                double xStart = (xSectionLeft + xSectionRight) / 2.0;
-                double yStart = oy;
+                double xStart = xSectionRight;
+                double yStart = oy + H * 0.25;
                 DrawHardnessSymbol(ctx, xStart, yStart);
             }
 
-            // 10. 标刻内容引线 - 从剖面顶部引出
+            // 10. 标刻内容引线 - 从剖面左侧引出
             var markingText = bag.GetString(FeatureDrivenDrawer.KeyMarkingContent);
             if (!string.IsNullOrWhiteSpace(markingText))
             {
-                double xTarget = (xSectionLeft + xSectionRight) / 2.0;
-                double yTarget = oy + H;
+                double xTarget = xSectionLeft;
+                double yTarget = oy + H * 0.75;
                 DrawSpecialHBLeaderToTop(ctx, xTarget, yTarget, markingText);
             }
         }
diff --git a/Cad/BlockRawFreeForgeRoundHeadDrawer.cs b/Cad/BlockRawFreeForgeRoundHeadDrawer.cs
index 1eef84c..f8271aa 100644
--- a/Cad/BlockRawFreeForgeRoundHeadDrawer.cs
+++ b/Cad/BlockRawFreeForgeRoundHeadDrawer.cs
@@ -307,21 +307,21 @@ namespace CadParamPluging.Cad
                 }
             }
 
-            // 9. 硬度符号 - 从剖面底部引出
+            // 9. 硬度符号 - 从剖面右侧引出
             var hardnessVal = bag.GetString(FeatureDrivenDrawer.KeyHardness);
             if (!string.IsNullOrWhiteSpace(hardnessVal))
             {
-                double xStart = (xSectionLeft + xSectionRight) / 2.0;
-                double yStart = oy;
+                double xStart = xSectionRight;
+                double yStart = oy + H * 0.25;
                 DrawHardnessSymbol(ctx, xStart, yStart);
             }
 
-            // 10. 标刻内容引线 - 从剖面顶部引出
+            // 10. 标刻内容引线 - 从剖面左侧引出
             var markingText = bag.GetString(FeatureDrivenDrawer.KeyMarkingContent);
             if (!string.IsNullOrWhiteSpace(markingText))
             {
-                double xTarget = (xSectionLeft + xSectionRight) / 2.0;
-                double yTarget = oy + H;
+                double xTarget = xSectionLeft;
+                double yTarget = oy + H * 0.75;
                 DrawSpecialHBLeaderToTop(ctx, xTarget, yTarget, markingText);
             }
         }
diff --git a/UI/ParamDrawingPanel.cs b/UI/ParamDrawingPanel.cs
index fcfc375..85ca1f8 100644
--- a/UI/ParamDrawingPanel.cs
+++ b/UI/ParamDrawingPanel.cs
@@ -179,22 +179,18 @@ namespace CadParamPluging.UI
             s = s.Replace(" ", "").Replace("\u3000", "").Replace("：", ":");
 
             var parts = s.Split(':');
-            if (parts.Length != 2 || !string.Equals(parts[0], "1", StringComparison.OrdinalIgnoreCase))
+            if (parts.Length != 2)
             {
-                throw new BusinessException("出图比例格式错误，应为 1:n（例如 1:5）");
+                throw new BusinessException("出图比例格式错误，应为 M:N（例如 1:5 或 2:1）");
             }
 
-            if (!TryParseDouble(parts[1], out var denom) || denom < 1e-9)
+            if (!TryParseDouble(parts[0], out var num) || num < 1e-9 ||
+                !TryParseDouble(parts[1], out var denom) || denom < 1e-9)
             {
-                throw new BusinessException("出图比例格式错误，应为 1:n（例如 1:5）");
+                throw new BusinessException("出图比例数值错误，M和N必须为大于0的数字");
             }
 
-            if (denom < 1.0)
-            {
-                throw new BusinessException("出图比例不支持放大（n 必须 >= 1）");
-            }
-
-            return 1.0 / denom;
+            return num / denom;
         }
 
         private static bool TryParseDouble(string s, out double value)