diff --git a/src/hook/algorithm/range-tree.js b/src/hook/algorithm/range-tree.js
index 0cdcfd7..908e3ab 100644
--- a/src/hook/algorithm/range-tree.js
+++ b/src/hook/algorithm/range-tree.js
@@ -1,16 +1,83 @@
 export class RangeTreeMap {
     constructor() {
         /**
-         * 
+         * @type {Map<number, SimpleSegment[]>}
          */
         this.horizontal = new Map();
         
         /**
-         * 
+         * @type {Map<number, SimpleSegment[]>}
          */
         this.vertical = new Map();
     }
 
+    /**
+     * @param {SimpleSegment} segment 
+     */
+    insert(segment) {
+        if (segment.x1 === segment.x2) {
+            // 竖直线
+            const x = segment.x1;
+            if (!this.vertical.has(x)) {
+                // TODO: 优化这里
+                this.vertical.set(x, []);
+            }
+            this.vertical.get(x).push(segment);
+        } else {
+            // 水平线
+            const y = segment.y1;
+            if (!this.horizontal.has(y)) {
+                // TODO: 优化这里
+                this.horizontal.set(y, []);
+            }
+            this.horizontal.get(y).push(segment);
+        }
+    }
 
+
+    /**
+     * @description 计算给定点的度
+     * @param {SimplePoint} point
+     */
+    getDegree(point) {
+        // 分别从两个方向进行统计
+        const x = point.x;
+        const y = point.y;
+
+        let degree = 0;
+        const horizontalSegments = this.horizontal.get(y) || [];
+        const verticalSegments = this.vertical.get(x) || [];
+        for (const segment of horizontalSegments) {
+            const x1 = Math.min(segment.x1, segment.x2);
+            const x2 = Math.max(segment.x1, segment.x2);
+            if (x1 <= x && x <= x2) {
+                degree ++;
+            }
+        }
+
+        for (const segment of verticalSegments) {
+            const y1 = Math.min(segment.y1, segment.y2);
+            const y2 = Math.max(segment.y1, segment.y2);
+            if (y1 <= y && y <= y2) {
+                degree ++;
+            }
+        }
+
+        return degree;
+    }
 }
 
+
+/**
+ * @typedef SimpleSegment
+ * @property {number} x1
+ * @property {number} y1
+ * @property {number} x2
+ * @property {number} y2
+ */
+
+/**
+ * @typedef SimplePoint
+ * @property {number} x
+ * @property {number} y
+ */
\ No newline at end of file
diff --git a/src/hook/render/cross-dot.js b/src/hook/render/cross-dot.js
index e87e751..69d7f14 100644
--- a/src/hook/render/cross-dot.js
+++ b/src/hook/render/cross-dot.js
@@ -33,6 +33,7 @@ export class CrossDotRender {
             id: this.crossId,
             x,
             y,
+            r: 3.5
         });
 
         this.crossId ++;
diff --git a/src/hook/render/index.js b/src/hook/render/index.js
index 31b4e0f..1db285d 100644
--- a/src/hook/render/index.js
+++ b/src/hook/render/index.js
@@ -13,6 +13,7 @@ import { pinkLog, redLog } from '../utils';
 import { treeviewData } from '@/components/treeview/tree';
 import { dotConnect } from './yosys';
 import { CrossDotRender } from './cross-dot';
+import { RangeTreeMap } from '../algorithm/range-tree';
 
 export class NetlistRender {
     /**
@@ -287,6 +288,8 @@ export class NetlistRender {
         this.wireRender = new WireRender(parentSelection, this);
         this.crossDotRender = new CrossDotRender(parentSelection, this);
 
+        const rangeTree = new RangeTreeMap();
+
         for (const edge of computedLayout.edges) {
             for (const section of edge.sections || []) {
                 const points = [];
@@ -296,10 +299,34 @@ export class NetlistRender {
                 }
                 points.push(section.endPoint);
                 this.wireRender.addAsD3DataItems(points, edge);
+
+                // 加入 range tree 中
+                for (let i = 0; i < points.length - 1; ++ i) {
+                    rangeTree.insert({
+                        x1: points[i].x,
+                        y1: points[i].y,
+                        x2: points[i + 1].x,
+                        y2: points[i + 1].y
+                    });
+                }
+            }
+        }
+
+        // 找出所有的交叉点
+        for (const edge of computedLayout.edges) {
+            for (const section of edge.sections || []) {
+                // 交叉点一定不是起点和终点
+                for (const point of section.bendPoints || []) {
+                    const degree = rangeTree.getDegree(point);
+                    if (degree >= 3) {
+                        this.crossDotRender.addAsD3DataItem(point.x, point.y);
+                    }
+                }
             }
         }
 
         this.wireRender.render();
+        this.crossDotRender.render();
     }
 
     /**
diff --git a/src/hook/render/wire.js b/src/hook/render/wire.js
index 5201802..c56cf62 100644
--- a/src/hook/render/wire.js
+++ b/src/hook/render/wire.js
@@ -54,12 +54,11 @@ export class WireRender {
         // 判断当前的朝向
         const endPoint = points.at(-1);
         const direction = endPoint.x > points.at(-2).x ? 'right' : 'left';
-        const arrowX = direction === 'right' ? endPoint.x - LAYOUT_CONSTANT.CELL_PORT_WIDTH - this.arrowWidth:
-                                               endPoint.x + LAYOUT_CONSTANT.CELL_PORT_WIDTH
-        
+        const arrowX = direction === 'right' ? endPoint.x - LAYOUT_CONSTANT.CELL_PORT_WIDTH - this.arrowWidth + 2.5:
+                                               endPoint.x + LAYOUT_CONSTANT.CELL_PORT_WIDTH - 2.5
+
         const arrowY = endPoint.y - this.arrowHeight / 2;
         
-
         this.data.push({
             id: this.idCounter,
             svg: lineSvg,
diff --git a/src/hook/skin/plusation.js b/src/hook/skin/plusation.js
index a95ace7..61c7259 100644
--- a/src/hook/skin/plusation.js
+++ b/src/hook/skin/plusation.js
@@ -8,7 +8,6 @@ export class PulseLine {
         this.pluseId = undefined;
     }
 
-
     /**
      * 
      * @param {d3.Selection} parentSelection