diff --git a/src/renderer/src/components/choose-textbook/index.vue b/src/renderer/src/components/choose-textbook/index.vue
index 7f3c178..4e4d3df 100644
--- a/src/renderer/src/components/choose-textbook/index.vue
+++ b/src/renderer/src/components/choose-textbook/index.vue
@@ -6,7 +6,7 @@
         <i class="iconfont icon-xiangyou"></i>
       </div>
       <div class="book-list" v-loading="treeLoading">
-        <el-tree ref="refTree" :data="treeData" :props="defaultProps" node-key="id"
+        <el-tree ref="refTree" :data="treeData" accordion :props="defaultProps" node-key="id"
           :default-expanded-keys="defaultExpandedKeys" :current-node-key="currentNodeId" highlight-current
           @node-click="handleNodeClick">
           <template #default="{ node }">
@@ -134,6 +134,10 @@ const changeBook = ({ id, itemtitle, avartar, fileurl }) => {
   curBookName.value = itemtitle
   curBookImg.value = BaseUrl + avartar
   curBookPath.value = fileurl
+
+  localStorage.removeItem('defaultExpandedKeys')
+  localStorage.removeItem('currentNodeId')
+  localStorage.setItem('curBook', JSON.stringify({id, itemtitle, avartar, fileurl}))
   getTreeData()
   setTimeout(() => {
     dialogVisible.value = false
@@ -144,7 +148,6 @@ const getTreeData = () => {
   //数据过滤
   let upData = transData(evaluationList.value)
 
-
   if(upData.length){
     treeData.value = [...upData]
   }
@@ -153,10 +156,22 @@ const getTreeData = () => {
     return
   }
   nextTick(() => {
-    defaultExpandedKeys.value = [treeData.value[0].id]
-    currentNode.data = getLastLevelData(treeData.value)[0]
-    currentNodeId.value = getLastLevelData(treeData.value)[0].id
-    currentNodeName.value = getLastLevelData(treeData.value)[0].label
+
+    let defaultCurNodeId = localStorage.getItem('currentNodeId')
+    if(defaultCurNodeId){
+      defaultCurNodeId = JSON.parse(defaultCurNodeId)
+      const data = findNode(defaultCurNodeId)
+      currentNode.data = findNode(defaultCurNodeId)
+      currentNodeId.value = data.id
+      currentNodeName.value = data.label
+    }
+    else{
+      defaultExpandedKeys.value = [treeData.value[0].id]
+      currentNode.data = getLastLevelData(treeData.value)[0]
+      currentNodeId.value = getLastLevelData(treeData.value)[0].id
+      currentNodeName.value = getLastLevelData(treeData.value)[0].label
+    }
+    
     emitChangeBook()
   })
 
@@ -183,6 +198,9 @@ const emitChangeBook = () => {
     },
     node: curNode
   }
+
+  localStorage.setItem('defaultExpandedKeys', JSON.stringify(defaultExpandedKeys.value))
+  localStorage.setItem('currentNodeId', JSON.stringify(currentNodeId.value))
   emit('changeBook', data)
 }
 
@@ -230,6 +248,11 @@ const findParentByChildId = (treeData, targetNodeId) => {
   return null;
 }
 
+const findNode = (id) =>{
+  if(!id) return
+  return evaluationList.value.find( item => item.id == id)
+}
+
 const transData = (data) => {
   let ary = []
   data.forEach(item => {
@@ -281,10 +304,21 @@ const getSubject = async () => {
 
   // 默认第一个
   if(!subjectList.value.length) return
-  curBookName.value = subjectList.value[0].itemtitle
-  curBookId.value = subjectList.value[0].id
-  curBookImg.value = BaseUrl + subjectList.value[0].avartar
-  curBookPath.value = subjectList.value[0].fileurl
+  let curBook = localStorage.getItem('curBook')
+  if(curBook){
+    curBook = JSON.parse(curBook)
+    curBookName.value = curBook.itemtitle
+    curBookId.value = curBook.id
+    curBookImg.value = BaseUrl + curBook.avartar
+    curBookPath.value = curBook.fileurl
+  }
+  else{
+    curBookName.value = subjectList.value[0].itemtitle
+    curBookId.value = subjectList.value[0].id
+    curBookImg.value = BaseUrl + subjectList.value[0].avartar
+    curBookPath.value = subjectList.value[0].fileurl
+    localStorage.setItem('curBookId', curBookId.value)
+  }
 }
 
 
@@ -321,7 +355,12 @@ const handleNodeClick = (data, node) => {
     node: toRaw(nodeData)
   }
   currentNode.data = curData
+
+  localStorage.setItem('defaultExpandedKeys', nodeData.parentNode ? JSON.stringify([parentNode.id]) : JSON.stringify([data.id]))
+  localStorage.setItem('currentNodeId', JSON.stringify(data.id))
+
   emit('nodeClick', curData)
+
 }
 onMounted(() => {
   getSubjectContent()