diff --git a/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs b/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
index 42de3f48f40cb86e0ad8e7c901a8e09c267ef91a..b863abb75be049c6ad085bba31c982cf058027ae 100644
--- a/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
+++ b/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
@@ -393,8 +393,30 @@ public static void ClipBlockRef(this BlockReference bref, Point3d pt1, Point3d p
         dict.SetAt<SpatialFilter>(spatialName, sf);
         // SetToDictionary(dict, spatialName, sf);
     }
+    /// <summary>
+    /// 获取裁剪块参照的裁剪定义
+    /// </summary>
+    /// <param name="bref">块参照</param>
+    /// <param name="tr">事务</param>
+    /// <returns>块裁剪定义</returns>
+    public static SpatialFilter? ClipedBlockRefPoints(this BlockReference bref, DBTrans? tr = null) 
+    {
+        tr ??= DBTrans.Top;
+        var filter = new SpatialFilter();
+        if (!bref.ExtensionDictionary.IsOk())
+            return null;
+        var extdict = tr.GetObject<DBDictionary>(bref.ExtensionDictionary, OpenMode.ForRead);
+        if (extdict != null && extdict.Contains(filterDictName))
+        {
+            var dict = tr.GetObject<DBDictionary>(extdict.GetAt(filterDictName), OpenMode.ForRead);
+            if (dict != null && dict.Contains(spatialName))
+            {
+                filter = tr.GetObject<SpatialFilter>(dict.GetAt(spatialName), OpenMode.ForRead);
+            }
+        }
+        return filter;
+    }
     #endregion
-
     #region 属性
     /// <summary>
     /// 更新动态块属性值
diff --git a/tests/TestShared/testblock.cs b/tests/TestShared/testblock.cs
index 1199e9e5565b00730a43f494684eb9892b756d0c..a253505d11986418e6a7779fa3c000298dfe2663 100644
--- a/tests/TestShared/testblock.cs
+++ b/tests/TestShared/testblock.cs
@@ -193,7 +193,21 @@ public void Test_ClipBlock()
         var bref1 = tr.GetObject<BlockReference>(id);
         bref1?.ClipBlockRef(new Point3d(13, 13, 0), new Point3d(17, 17, 0));
     }
-
+    [CommandMethod("testclippoints")]
+    public static void testclippoints()
+    {
+        DBTrans tr = new DBTrans();
+        PromptEntityOptions peo = new PromptEntityOptions("选择块");
+        PromptEntityResult per = tr.Editor!.GetEntity(peo);
+        if (per.Status != PromptStatus.OK) return;
+        BlockReference block = tr.GetObject<BlockReference>(per.ObjectId)!;
+        var sfd = block.ClipedBlockRefPoints();
+        if (sfd is null) return;
+        var points = sfd?.Definition.GetPoints(); //裁剪边界
+#if NET45
+            var invert = sfd?.Inverted;                  //是否反向裁剪
+#endif
+    }
     /// <summary>
     /// 给用户的测试程序，不知道对错
     /// </summary>