diff --git a/Views/UserControl/ViewportData/Helper/ObjExporter.cs b/Views/UserControl/ViewportData/Helper/ObjExporter.cs
index 91b7c64..3064d1d 100644
--- a/Views/UserControl/ViewportData/Helper/ObjExporter.cs
+++ b/Views/UserControl/ViewportData/Helper/ObjExporter.cs
@@ -17,9 +17,13 @@ public class ObjExporter
             .GroupBy(entity => entity.PlaneCode)
             .ToDictionary(group => group.Key, group => group.ToList());
         //腰 单组
-        List<Viewport3DTriangleEntity> waistList = entities
+        // List<Viewport3DTriangleEntity> waistList = entities
+        //     .Where(entity => entity.PlaneType == PlaneType.Girdle)
+        //     .ToList();
+        Dictionary<string, List<Viewport3DTriangleEntity>> gridleList = entities
             .Where(entity => entity.PlaneType == PlaneType.Girdle)
-            .ToList();
+            .GroupBy(entity => entity.PlaneCode)
+            .ToDictionary(group => group.Key, group => group.ToList());
         
         //同一个面只保留外边框(除了腰)
         Dictionary<string, List<Vector3>> resultPoints = new Dictionary<string, List<Vector3>>();
@@ -35,17 +39,29 @@ public class ObjExporter
             }
             resultPoints.Add(dic.Key, ViewportHelperPro.VectorClockwiseSort(new HashSet<Vector3>(tempPoints).ToList()));
         }
-        List<Vector3> selFaceVector = new List<Vector3>();
-        if (waistList.Count > 0)
+        
+        foreach (var dic in gridleList)
         {
-            foreach (var entity in waistList)
+            List<Vector3> tempPoints = new List<Vector3>();
+            foreach (var entity in dic.Value)
             {
-                selFaceVector.Add(entity.Point1);
-                selFaceVector.Add(entity.Point2);
-                selFaceVector.Add(entity.Point3);
+                tempPoints.Add(entity.Point1);
+                tempPoints.Add(entity.Point2);
+                tempPoints.Add(entity.Point3);
             }
+            resultPoints.Add(dic.Key, ViewportHelperPro.VectorClockwiseSort(new HashSet<Vector3>(tempPoints).ToList()));
         }
-        resultPoints.Add("yao", selFaceVector);
+        // List<Vector3> selFaceVector = new List<Vector3>();
+        // if (waistList.Count > 0)
+        // {
+        //     foreach (var entity in waistList)
+        //     {
+        //         selFaceVector.Add(entity.Point1);
+        //         selFaceVector.Add(entity.Point2);
+        //         selFaceVector.Add(entity.Point3);
+        //     }
+        // }
+        // resultPoints.Add("yao", selFaceVector);
         
         StringBuilder sb = new StringBuilder();
 
@@ -83,8 +99,13 @@ public class ObjExporter
 
             // 获取面上的所有顶点并排序
             List<Vector3> faceVertices = face.Value;
-            // Vector3 center = GetCenterOfVertices(faceVertices);
-            // faceVertices.Sort((v1, v2) => GetAngle(v1, center).CompareTo(GetAngle(v2, center)));
+            if (!face.Key.StartsWith("11_"))
+            {
+                Vector3 center = GetCenterOfVertices(faceVertices);
+                faceVertices.Sort((v1, v2) => GetAngle(v1, center).CompareTo(GetAngle(v2, center)));
+            }
+
+           
 
             // 正面：按顺时针顺序输出
             sb.Append("f");