diff --git a/front/src/views/instructionManual/index.vue b/front/src/views/instructionManual/index.vue
index 13a5a215..10350124 100644
--- a/front/src/views/instructionManual/index.vue
+++ b/front/src/views/instructionManual/index.vue
@@ -18,7 +18,7 @@
           </div>
           <div v-else style="height:100%">
             <iframe name="iframeName" width="1000" height="100%" id="iframeId" :frameborder="0"
-              :src="window.SITE_CONFIG['frontUrl'] + clickData.doc"></iframe>
+              :src="doc_base_url + clickData.doc"></iframe>
           </div>
         </div>
       </div>
@@ -48,6 +48,7 @@ const clickData = ref({})
 const treeArray = ref([])
 const treeArrayCopy = ref([])
 let typeList = ['组件服务', '应用资源', '基础设施', '数据资源', '知识库']
+let doc_base_url = ref(window.SITE_CONFIG['frontUrl'])
 
 const treeClick = (item) => {
   clickData.value = item