update：代码结构修改

src/examples/measureStation/addStation/addStation.vue

 <template>
     <div id="cesiumContainer" class="cesium-container"></div>
 </template>
+
 <script setup>
 import { onMounted } from 'vue';
 import { addStation } from './function';
 
 let viewer;
+
 onMounted(() => {
     const script = document.createElement('script');
     script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
@@ -39,7 +41,6 @@ onMounted(() => {
 
     };
     document.head.appendChild(script);
-
     const link = document.createElement('link');
     link.rel = 'stylesheet';
     link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';

src/examples/measureStation/stationCoordinate/stationCoordinate-function.js

-export function addStationCoordinate(info) {
-    const script = document.createElement('script');
-    script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
-    script.onload = () => {
-        window.Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3Njg4ZWU5Yi1iZDhiLTRhYmUtOTRiYS04YjM5NmUwNjVmMDMiLCJpZCI6MjI3MzQ3LCJpYXQiOjE3MjA1MjA4Mjh9.E5XW4LnwgfVAaBC-znaYr61m4yK0-j2qEQhi9qwFFPE'
-
-        const viewer = new window.Cesium.Viewer('cesiumContainer', {
-            infoBox: false,
-            shouldAnimate: true
-        });
-
+export function addStationCoordinate(viewer, info) {
   const SITE = {
       id: null,
       show: true,
@@ -127,12 +117,4 @@ export function addStationCoordinate(info) {
   }).catch(error => {
       console.error('Failed to zoom to entity:', error);
   });
-    };
-    
-    document.head.appendChild(script);
-
-    const link = document.createElement('link');
-    link.rel = 'stylesheet';
-    link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';
-    document.head.appendChild(link);
 }
\ No newline at end of file

src/examples/measureStation/stationCoordinate/stationCoordinate.vue

 <template>
     <div id="cesiumContainer" class="cesium-container"></div>
 </template>
+
 <script setup>
 import { onMounted } from 'vue';
 import { addStationCoordinate } from './function';
+
+let viewer;
+
 onMounted(() => {
+    const script = document.createElement('script');
+    script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
+    script.onload = () => {
+        window.Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3Njg4ZWU5Yi1iZDhiLTRhYmUtOTRiYS04YjM5NmUwNjVmMDMiLCJpZCI6MjI3MzQ3LCJpYXQiOjE3MjA1MjA4Mjh9.E5XW4LnwgfVAaBC-znaYr61m4yK0-j2qEQhi9qwFFPE'
+
+        viewer = new window.Cesium.Viewer('cesiumContainer', {
+            infoBox: false,
+            shouldAnimate: true
+        });
+
         let siteInfo = {
             id: 'site',
             position: [20, 20, 250],
@@ -18,18 +32,24 @@ onMounted(() => {
                 outline: false,
                 fill: true,
             }, 
-        
             label: {
                 text:''
             },
         }
-    addStationCoordinate(siteInfo)
+        addStationCoordinate(viewer, siteInfo)
+
+    };
+    document.head.appendChild(script);
+    const link = document.createElement('link');
+    link.rel = 'stylesheet';
+    link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';
+    document.head.appendChild(link);
 });
 </script>
 
 <style>
 .cesium-container {
-width: 100%;
-height: 100vh;
+    width: 100%;
+    height: 100vh;
 }
 </style>
\ No newline at end of file