diff --git a/src/Common/CurveUtils.ts b/src/Common/CurveUtils.ts
index bcffd2fdb..bc47eb585 100644
--- a/src/Common/CurveUtils.ts
+++ b/src/Common/CurveUtils.ts
@@ -582,3 +582,22 @@ export function IsRect(cu: Curve): { isRect: boolean, size?: Vector3, box?: Box3
     }
     return { isRect: false };
 }
+
+/**用4个矩形点构造矩形 */
+export function getRectFrom4Pts(pts: Vector3[])
+{
+    if (pts.length !== 4) return;
+    let p = pts.shift();
+    pts.sort((p1, p2) => p.distanceTo(p1) - p.distanceTo(p2));
+    pts.splice(1, 0, p);
+    let lineData = pts.map(p =>
+    {
+        return {
+            pt: new Vector2(p.x, p.y),
+            bul: 0
+        }
+    });
+    let l = new Polyline(lineData);
+    l.CloseMark = true;
+    return l;
+}
diff --git a/src/Editor/UserConfig.ts b/src/Editor/UserConfig.ts
index 73fc07f1f..7cf2da60c 100644
--- a/src/Editor/UserConfig.ts
+++ b/src/Editor/UserConfig.ts
@@ -28,8 +28,6 @@ export class UserConfig
         let type = sessionStorage.getItem(StoreageKeys.RenderType);
         if (type)
             this._renderType = parseFloat(type);
-
-        this.openExactDrill = localStorage.getItem(StoreageKeys.ExactDrill) === "true";
     }
     set RenderType(t: RenderType)
     {
diff --git a/src/Geometry/SpaceParse/SurroundOutlineParse.ts b/src/Geometry/SpaceParse/SurroundOutlineParse.ts
index 09811baf6..d25c56563 100644
--- a/src/Geometry/SpaceParse/SurroundOutlineParse.ts
+++ b/src/Geometry/SpaceParse/SurroundOutlineParse.ts
@@ -7,6 +7,8 @@ import { BoolOpeartionType } from "../../GraphicsSystem/BoolOperateUtils";
 import { equaln, isParallelTo, isPerpendicularityTo } from "../GeUtils";
 import { ISpaceParse } from "./ISpaceParse";
 import { Board } from "../../DatabaseServices/Entity/Board";
+import { getRectFrom4Pts } from "../../Common/CurveUtils";
+import { arrayLast } from "../../Common/ArrayExt";
 
 /**
  * 板件周围轮廓分析
@@ -27,13 +29,20 @@ export class SurroundOutlineParse extends ISpaceParse
             for (let br of brs)
             {
                 let brNormal = br.Normal;
-
                 let box = br.BoundingBoxInOCS;
-
+                let min = box.min;
+                let max = box.max;
+                //盒子8个点,避免盒子旋转后被破坏
+                let pts = [
+                    min, new Vector3(max.x, min.y, min.z),
+                    new Vector3(min.x, min.y, max.z), new Vector3(max.x, min.y, max.z),
+                    new Vector3(min.x, max.y, min.z), new Vector3(max.x, max.y, min.z),
+                    new Vector3(min.x, max.y, max.z), max
+                ];
                 //br->ucs
                 let mtx = new Matrix4().multiplyMatrices(ucsInv, br.OCS);
-                box.applyMatrix4(mtx);
-
+                pts.forEach(p => p.applyMatrix4(mtx));
+                pts.sort((p1, p2) => p1.z - p2.z);
                 if (isParallelTo(brNormal, ucsNormal))
                 {
                     let cu = br.ContourCurve;
@@ -45,11 +54,11 @@ export class SurroundOutlineParse extends ISpaceParse
                     }
                 }
                 else if (isPerpendicularityTo(brNormal, ucsNormal))
-                    pls.push(new Polyline().Create2Pt(box.min, box.max));
+                    pls.push(getRectFrom4Pts(pts.slice(0, 4)));
                 else
                     continue;
 
-                maxZ = Math.max(maxZ, box.max.z);
+                maxZ = Math.max(maxZ, arrayLast(pts).z);
             }
             let retCus = this.GetOutline(pls);
 
@@ -93,44 +102,32 @@ export class SurroundOutlineParse extends ISpaceParse
             boxes.push(box);
             boxMap.set(box, br);
         }
-
-        boxes.sort((b1, b2) =>
-        {
-            let min1 = b1.min;
-            let min2 = b2.min;
-            if (!equaln(min1.x, min2.x))
-                return min1.x - min2.x;
-            else if (equaln(min1.y, min2.y))
-                return min1.y - min2.y;
-            else
-                return min1.z - min2.z;
-        });
-
-        let originBox: Box3;
         let boardList: Board[][] = [];
-        let usedBox = new WeakSet();
         while (boxes.length > 0)
         {
-            originBox = boxes.shift();
-            let brs = [];
-            if (!usedBox.has(originBox))
+            let originBox = boxes.shift();
+            let brs = [boxMap.get(originBox)];
+            while (true)
             {
-                usedBox.add(originBox);
-                brs.push(boxMap.get(originBox));
-            }
-            else continue;
+                let remBoxes = boxes.filter(b =>
+                {
+                    if (originBox.intersectsBox(b))
+                    {
+                        originBox.union(b);
+                        brs.push(boxMap.get(b));
+                        return false;
+                    }
+                    return true;
+                })
 
-            for (let b of boxes)
-            {
-                if (usedBox.has(b)) continue;
-                if (originBox.intersectsBox(b))
+                if (remBoxes.length === boxes.length)
                 {
-                    originBox.union(b);
-                    brs.push(boxMap.get(b));
-                    usedBox.add(b);
+                    boardList.push(brs);
+                    break;
                 }
+                else
+                    boxes = remBoxes;
             }
-            boardList.push(brs);
         }
         return boardList;
     }
diff --git a/src/UI/Components/Modal/OptionModal/DrawConfigPanel.tsx b/src/UI/Components/Modal/OptionModal/DrawConfigPanel.tsx
index b5c7f36dd..1298ae511 100644
--- a/src/UI/Components/Modal/OptionModal/DrawConfigPanel.tsx
+++ b/src/UI/Components/Modal/OptionModal/DrawConfigPanel.tsx
@@ -3,7 +3,6 @@ import { observer } from 'mobx-react';
 import * as React from 'react';
 import { app } from '../../../../ApplicationServices/Application';
 import { UserConfig } from '../../../../Editor/UserConfig';
-import { StoreageKeys } from '../../../../Common/KeyEnum';
 
 interface IConfigProps
 {
@@ -36,15 +35,6 @@ export class DrawConfigPanel extends React.Component<IConfigProps, {}> {
                     checked={userConfig.openDrillingReactor}
                     onChange={this.toggleDrillingReactor}
                 />
-                <Checkbox
-                    label="精确排钻"
-                    checked={userConfig.openExactDrill}
-                    onChange={() =>
-                    {
-                        userConfig.openExactDrill = !userConfig.openExactDrill;
-                        localStorage.setItem(StoreageKeys.ExactDrill, String(userConfig.openExactDrill))
-                    }}
-                />
                 <H5>板件绘图配置</H5>
                 <Checkbox
                     label="自动切割"