diff --git a/src/CAD/IFox.CAD.Shared/ExtensionMethod/Jig/JigEx.cs b/src/CAD/IFox.CAD.Shared/ExtensionMethod/Jig/JigEx.cs
index 241277b366853fa0da15cf2c8bb21ece50223a32..7b3d26023d2540d4ed473b16f2b522d7b40bde9d 100644
--- a/src/CAD/IFox.CAD.Shared/ExtensionMethod/Jig/JigEx.cs
+++ b/src/CAD/IFox.CAD.Shared/ExtensionMethod/Jig/JigEx.cs
@@ -1,4 +1,4 @@
-
+
 
 namespace IFoxCAD.Cad;
 
@@ -107,7 +107,7 @@ protected override SamplerStatus Sampler(JigPrompts prompts)
         lastIsKw = pro.Status == PromptStatus.Keyword;
 
         // 上次鼠标点不同(一定要这句,不然图元刷新太快会看到奇怪的边线)
-        var mousePointWcs = pro.Value;
+        var mousePointWcs = LastIsKw ? MousePointWcsLast : pro.Value;
 
         // == 是比较类字段,但是最好转为哈希比较.
         // IsEqualTo 是方形判断(仅加法),但是cad是距离.