diff --git a/src/Utils/ModelItemTransformHelper.cs b/src/Utils/ModelItemTransformHelper.cs
index c9ded12..a7c7181 100644
--- a/src/Utils/ModelItemTransformHelper.cs
+++ b/src/Utils/ModelItemTransformHelper.cs
@@ -103,7 +103,7 @@ namespace NavisworksTransport.Utils
         }
 
         /// <summary>
-        /// 将物体从当前位置移动到指定位置和朝向（增量模式）
+        /// 将物体移动到指定位置和朝向（先回到CAD原始位置，再移动）
         /// 适用于碰撞位置还原等场景
         /// </summary>
         /// <param name="item">要移动的物体</param>
@@ -114,32 +114,35 @@ namespace NavisworksTransport.Utils
             var doc = Application.ActiveDocument;
             var modelItems = new ModelItemCollection { item };
 
-            // 获取当前状态
-            var currentBounds = item.BoundingBox();
-            var currentGroundPos = new Point3D(
-                currentBounds.Center.X,
-                currentBounds.Center.Y,
-                currentBounds.Min.Z
-            );
-            var currentYaw = GetYawFromTransform(item.Transform);
+            // 🔥 关键：先回到CAD原始位置，确保从已知状态开始计算
+            doc.Models.ResetPermanentTransform(modelItems);
 
-            // 计算位置和旋转增量
+            // 获取CAD原始状态
+            var originalBounds = item.BoundingBox();
+            var originalGroundPos = new Point3D(
+                originalBounds.Center.X,
+                originalBounds.Center.Y,
+                originalBounds.Min.Z
+            );
+            var originalYaw = GetYawFromTransform(item.Transform);
+
+            // 计算从CAD原始位置到目标位置的增量
             var deltaPos = new Vector3D(
-                targetPosition.X - currentGroundPos.X,
-                targetPosition.Y - currentGroundPos.Y,
-                targetPosition.Z - currentGroundPos.Z
+                targetPosition.X - originalGroundPos.X,
+                targetPosition.Y - originalGroundPos.Y,
+                targetPosition.Z - originalGroundPos.Z
             );
-            double deltaYaw = targetYaw - currentYaw;
+            double deltaYaw = targetYaw - originalYaw;
 
-            // 应用增量变换（和ClashDetective中的做法一致）
+            // 应用增量变换
             Transform3D transform;
             if (Math.Abs(deltaYaw) > 0.001)
             {
                 // 有旋转：需要补偿绕原点旋转带来的位置偏移
                 double cos = Math.Cos(deltaYaw);
                 double sin = Math.Sin(deltaYaw);
-                double rotatedX = currentGroundPos.X * cos - currentGroundPos.Y * sin;
-                double rotatedY = currentGroundPos.X * sin + currentGroundPos.Y * cos;
+                double rotatedX = originalGroundPos.X * cos - originalGroundPos.Y * sin;
+                double rotatedY = originalGroundPos.X * sin + originalGroundPos.Y * cos;
 
                 var compensatedTranslation = new Vector3D(
                     targetPosition.X - rotatedX,