diff --git a/src/components/line-app/states/RelayState.vue b/src/components/line-app/states/RelayState.vue
index 72ac55f..e640f91 100644
--- a/src/components/line-app/states/RelayState.vue
+++ b/src/components/line-app/states/RelayState.vue
@@ -17,10 +17,10 @@
       </q-btn-dropdown>
     </q-card-section>
     <q-separator inset />
-    <q-card-section>
-      <q-input outlined readonly v-model="relayState.id" label="id" hint="" />
+    <q-card-section class="q-gutter-sm">
+      <q-input outlined readonly v-model="relayState.id" label="id" />
       <q-input outlined readonly v-model="relayState.code" label="名称" />
-      <q-checkbox v-model="relayState.xh" outlined label="是否吸合" />
+      <q-checkbox disable v-model="relayState.xh" label="是否吸合" />
     </q-card-section>
   </q-card>
 </template>
diff --git a/src/graphics/platform/Platform.ts b/src/graphics/platform/Platform.ts
index 764e0d4..3de34b8 100644
--- a/src/graphics/platform/Platform.ts
+++ b/src/graphics/platform/Platform.ts
@@ -168,18 +168,23 @@ export class Platform extends JlGraphic {
       }
     });
     if (minDistanceRefSections) {
-      const refSection = minDistanceRefSections?.reduce((prev, cur) => {
+      const refSection = minDistanceRefSections.reduce((prev, cur) => {
         return distance2(
-          prev.localToCanvasPoint(prev.getStartPoint()),
+          prev.localToCanvasPoint(getRectangleCenter(prev.getLocalBounds())),
           this.position
         ) >
-          distance2(cur.localToCanvasPoint(prev.getStartPoint()), this.position)
+          distance2(
+            cur.localToCanvasPoint(getRectangleCenter(cur.getLocalBounds())),
+            this.position
+          )
           ? cur
           : prev;
       });
-      if (refSection) {
-        this.relationManage.addRelation(this, refSection);
-      }
+      this.relationManage.deleteRelationOfGraphicAndOtherType(
+        this,
+        Section.Type
+      );
+      this.relationManage.addRelation(this, refSection);
     }
   }
   saveRelations() {