diff --git a/examples/point/marker/demo/clustermarker.js b/examples/point/marker/demo/clustermarker.js
index 1ecf54cf0a..55514b5c34 100644
--- a/examples/point/marker/demo/clustermarker.js
+++ b/examples/point/marker/demo/clustermarker.js
@@ -1,11 +1,5 @@
-import {
-  Scene,
-  Marker,
-  MarkerLayer
-} from '@antv/l7';
-import {
-  GaodeMap
-} from '@antv/l7-maps';
+import { Scene, Marker, MarkerLayer } from '@antv/l7';
+import { GaodeMap } from '@antv/l7-maps';
 
 const scene = new Scene({
   id: 'map',
@@ -29,9 +23,7 @@ function addMarkers() {
         cluster: true
       });
       for (let i = 0; i < nodes.features.length; i++) {
-        const {
-          coordinates
-        } = nodes.features[i].geometry;
+        const { coordinates } = nodes.features[i].geometry;
         const marker = new Marker().setLnglat({
           lng: coordinates[0],
           lat: coordinates[1]