diff --git a/src/graphics/sectionLink/SectionLinkDrawAssistant.ts b/src/graphics/sectionLink/SectionLinkDrawAssistant.ts
index 60e6ebe..0671e80 100644
--- a/src/graphics/sectionLink/SectionLinkDrawAssistant.ts
+++ b/src/graphics/sectionLink/SectionLinkDrawAssistant.ts
@@ -6,6 +6,7 @@ import {
   JlGraphic,
   linePoint,
   GraphicIdGenerator,
+  VectorText,
 } from 'src/jl-graphic';
 import {
   ISectionLinkData,
@@ -13,19 +14,17 @@ import {
   SectionLinkConsts,
   SectionLinkTemplate,
 } from './SectionLink';
-import {
-  DisplayObject,
-  FederatedMouseEvent,
-  Graphics,
-  IHitArea,
-  IPointData,
-  Point,
-} from 'pixi.js';
+import { DisplayObject, Graphics, IHitArea, IPointData, Point } from 'pixi.js';
 import { Section } from '../section/Section';
 import { Turnout } from '../turnout/Turnout';
 import { AxleCounting } from '../axleCounting/AxleCounting';
 import { IRelatedRefData } from '../CommonGraphics';
 import { graphicData } from 'src/protos/stationLayoutGraphics';
+import {
+  PolylineEditPlugin,
+  ILineGraphic,
+  IEditPointOptions,
+} from 'src/jl-graphic/plugins/GraphicEditPlugin';
 
 const rrDevicePort = graphicData.RelatedRef.DevicePort;
 const rrDeviceType = graphicData.RelatedRef.DeviceType;
@@ -465,6 +464,38 @@ export class SectionLinkDraw extends GraphicDrawAssistant<
     this.graphic.clear();
   }
 }
+class LinkPolylineEditPlugin extends PolylineEditPlugin {
+  static Name = 'LinkPolylineEditPlugin';
+  labels: VectorText[] = [];
+  constructor(g: ILineGraphic, options?: IEditPointOptions) {
+    super(g, options);
+    this.name = LinkPolylineEditPlugin.Name;
+    this.initLabels();
+  }
+
+  initLabels() {
+    this.labels = [new VectorText('A'), new VectorText('B')];
+    this.labels.forEach((label) => {
+      label.setVectorFontSize(14);
+      this.addChild(label);
+      label.style.fill = '#ff0';
+    });
+    this.updateEditedPointsPosition();
+  }
+
+  updateEditedPointsPosition() {
+    super.updateEditedPointsPosition();
+    console.log(this.editedPoints, '--', this.labels[0], this.labels[1]);
+    this.labels[0]?.position.set(
+      this.editedPoints[0].x,
+      this.editedPoints[0].y + 10
+    );
+    this.labels[1]?.position.set(
+      this.editedPoints[this.editedPoints.length - 1].x,
+      this.editedPoints[this.editedPoints.length - 1].y + 10
+    );
+  }
+}
 
 export class SectionLinkGraphicHitArea implements IHitArea {
   section: SectionLink;
@@ -506,11 +537,36 @@ export class SectionLinkEditPlugin extends GraphicInteractionPlugin<SectionLink>
     g.labelGraphic.cursor = 'pointer';
     g.labelGraphic.selectable = true;
     g.labelGraphic.draggable = true;
+    g.on('selected', this.onSelected, this);
+    g.on('unselected', this.onUnselected, this);
   }
   unbind(g: SectionLink): void {
     g.transformSave = false;
     g.labelGraphic.eventMode = 'none';
     g.labelGraphic.selectable = false;
     g.labelGraphic.draggable = false;
+    g.off('selected', this.onSelected, this);
+    g.off('unselected', this.onUnselected, this);
+  }
+  onSelected(g: DisplayObject): void {
+    const link = g as SectionLink;
+
+    let lep = link.getAssistantAppend<LinkPolylineEditPlugin>(
+      LinkPolylineEditPlugin.Name
+    );
+    if (!lep) {
+      lep = new LinkPolylineEditPlugin(link);
+      link.addAssistantAppend(lep);
+    }
+    lep.showAll();
+  }
+  onUnselected(g: DisplayObject): void {
+    const link = g as SectionLink;
+    const lep = link.getAssistantAppend<LinkPolylineEditPlugin>(
+      LinkPolylineEditPlugin.Name
+    );
+    if (lep) {
+      lep.hideAll();
+    }
   }
 }