diff --git a/src/App.vue b/src/App.vue
index e89ccff..6d10d46 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,6 +1,6 @@
 <template>
   <div id="app">
-    <el-radio-group v-if="Setting.isDev" v-model="ip" @change="ipChange">
+    <el-radio-group v-if="Setting.isDev" v-model="ip" @change="ipChange" style="z-index: 10;position: fixed;top: 0;">
       <el-radio :label="0">刘榕ip</el-radio>
       <el-radio :label="1">陈赓ip</el-radio>
       <el-radio :label="2">测试服ip</el-radio>
diff --git a/src/api/index.js b/src/api/index.js
index 8699612..fbb233d 100644
--- a/src/api/index.js
+++ b/src/api/index.js
@@ -531,6 +531,7 @@ export default {
   curriculumTree: `nakadai/nakadai/curriculum/curriculumTree`,
   boutiqueCurriculumTree: `occupationlab/occupationlab/theoreticalCourse/boutiqueCurriculumTree`,
   combinationResource: `nakadai/nakadai/curriculum/combinationResource`,
+  replaceResource: `nakadai/nakadai/curriculum/subsection/replaceResource`,
   deleteChapterCurriculm: `nakadai/nakadai/curriculum/chapter/deleteChapter`,
   editChapterCurriculm: `nakadai/nakadai/curriculum/chapter/editChapter`,
   addChapterCurriculm: `nakadai/nakadai/curriculum/chapter/addChapter`,
diff --git a/src/layouts/sidebar/index.vue b/src/layouts/sidebar/index.vue
index d01905f..169b357 100644
--- a/src/layouts/sidebar/index.vue
+++ b/src/layouts/sidebar/index.vue
@@ -100,7 +100,7 @@ export default {
 <style lang="scss" scoped>
 .sidebar {
   width: 160px;
-  height: calc(100vh - 193px);
+  height: calc(100vh - 173px);
   overflow: auto;
   transition: .5s;
   transform: translateX(-200px);
diff --git a/src/pages/lesson/content/index.vue b/src/pages/lesson/content/index.vue
index b3b404a..1226cd3 100644
--- a/src/pages/lesson/content/index.vue
+++ b/src/pages/lesson/content/index.vue
@@ -86,7 +86,7 @@
       </span>
     </el-dialog>
 
-    <el-dialog title="添加小节" :visible.sync="sectionVisible" width="540px" @close="closeSection"
+    <el-dialog title="本地上传资源" :visible.sync="sectionVisible" width="540px" @close="closeSection"
       :close-on-click-modal="false">
       <el-form ref="form" :model="sectionForm" label-width="80px" @submit.native.prevent>
         <el-form-item label="资源添加">
@@ -199,6 +199,13 @@
       </span>
     </el-dialog>
 
+    <el-dialog title="更换内容资源" :visible.sync="switchTypeVisible" width="400px">
+      <ul class="source-list">
+        <li @click="sourceVisible = true">系统资源</li>
+        <li @click="editSection">本地上传</li>
+      </ul>
+    </el-dialog>
+
     <Source :visible.sync="sourceVisible" />
   </div>
 </template>
@@ -225,11 +232,11 @@ export default {
       uploading: false,
       uploadList: [],
       chapterVisible: false,
-      chapterId: "",
-      chapterName: "",
+      chapterId: '',
+      chapterName: '',
       sectionVisible: false,
-      sectionName: "",
-      sectionId: "",
+      sectionName: '',
+      sectionId: '',
       switchVisible: false,
       sectionNameVisible: false,
 
@@ -243,17 +250,18 @@ export default {
       },
       keyword: '',
       searchTimer: null,
-      fileId: "",
-      fileName: "",
-      fileUrl: "",
-      originalFileName: "",
-      fileType: "",
+      fileId: '',
+      fileName: '',
+      fileUrl: '',
+      originalFileName: '',
+      fileType: '',
       videoSrc: '',
-      playAuth: "",
+      playAuth: '',
       player: null,
-      previewImg: "",
-      iframeSrc: "",
+      previewImg: '',
+      iframeSrc: '',
       curFile: {},
+      curSection: {},
       isAddSection: false,
       isWord: false,
       isPPT: false,
@@ -263,7 +271,7 @@ export default {
       showMask2: false,
       loadIns: null,
       pdfVisible: false,
-      pdfSrc: "",
+      pdfSrc: '',
       previewing: false,
       showProgress: false,
       progressPercent: 0,
@@ -285,6 +293,8 @@ export default {
       },
       sourceVisible: false,
       sections: [],
+
+      switchTypeVisible: false,
     };
   },
   mounted () {
@@ -444,7 +454,7 @@ export default {
     // 批量移除小节
     batchDelSection () {
       const list = this.sections.filter(e => e.check)
-      this.$confirm(list.length ? '此删除操作不可逆，是否确认删除选中项？' : '此删除操作不可逆，是否确认全部资源？', "提示", {
+      this.$confirm(list.length ? '此删除操作不可逆，是否确认删除选中项？' : '此删除操作不可逆，是否确认删除全部资源？', "提示", {
         type: "warning"
       }).then(async () => {
         await this.$post(this.api.deleteSubsectionBatch, {
@@ -563,9 +573,11 @@ export default {
 
     // 添加系统资源
     showSource () {
+      this.curSection = {}
       this.sourceVisible = true
     },
-    addSection (id) {
+    // 本地上传新增资源
+    addSection () {
       this.sectionForm.sectionName = ''
       this.fileUrl = ''
       this.uploadList = []
@@ -573,34 +585,40 @@ export default {
       this.isAddSection = true
       this.sectionVisible = true
     },
+    // 本地上传编辑资源
+    editSection () {
+      this.sectionForm.sectionName = this.curSection.name
+      this.fileUrl = ''
+      this.uploadList = []
+      this.isAddSection = false
+      this.sectionVisible = true
+    },
     chapterSubmit () {
-      if (!this.chapterName) return this.$message.warning("请填写章节名称");
-      let data = {
+      if (!this.chapterName) return this.$message.warning("请填写章节名称")
+      const data = {
         cid: this.id,
         name: this.chapterName
       };
       if (this.chapterId) {
-        data.id = this.chapterId;
+        data.id = this.chapterId
         this.$put(this.api.editChapterCurriculm, data).then(res => {
-          this.$message.success("修改成功");
-          this.chapterVisible = false;
-          this.getData();
-        })
-          .catch(err => {
-          });
+          this.$message.success("修改成功")
+          this.chapterVisible = false
+          this.getData()
+        }).catch(err => { })
       } else {
         this.$post(this.api.addChapterCurriculm, data).then(res => {
-          this.$message.success("添加成功");
-          this.chapterVisible = false;
-          this.getData();
+          this.$message.success("添加成功")
+          this.chapterVisible = false
+          this.getData()
         }).catch(err => { })
       }
     },
-    sectionSubmit (e) {
-      if (!this.sectionForm.sectionName) return this.$message.warning("请填写小节名称");
-      if (this.uploading) return this.$message.warning("资源正在上传中，请稍候");
-      if (!this.fileUrl && !this.fileId) return this.$message.warning("请上传资源");
-      let data = {
+    async sectionSubmit (e) {
+      if (!this.sectionForm.sectionName) return this.$message.warning('请填写小节名称')
+      if (this.uploading) return this.$message.warning('资源正在上传中，请稍候')
+      if (!this.fileUrl && !this.fileId) return this.$message.warning('请上传资源')
+      const data = {
         id: this.sectionId,
         cid: this.id,
         chapterId: this.chapterId,
@@ -610,21 +628,24 @@ export default {
         fileName: this.fileName,
         fileType: this.fileType,
         originalFileName: this.originalFileName
-      };
-      this.$post(this.api.addSubsectionCurriculm, data).then(res => {
-        this.$message.success("添加成功");
-        this.sectionVisible = false;
-        this.getData();
-      })
-        .catch(err => {
-        })
+      }
+      if (this.sectionId) {
+        await this.$put(this.api.editSubsectionCurriculm, data)
+      } else {
+        await this.$post(this.api.addSubsectionCurriculm, data)
+      }
+
+      this.$message.success('添加成功')
+      this.sectionVisible = false
+      this.switchTypeVisible = false
+      this.getData()
     },
     closeSwitch () {
-      this.fileId = "";
-      this.fileName = "";
-      this.fileType = "";
-      this.fileUrl = "";
-      this.sectionId = "";
+      this.fileId = ''
+      this.fileName = ''
+      this.fileType = ''
+      this.fileUrl = ''
+      this.sectionId = ''
       this.progressPercent = 0
     },
     // 下载资源
@@ -679,7 +700,7 @@ export default {
         this.pdfSrc = row.fileUrl;
         this.pdfVisible = true;
       } else {
-        this.$get(`${this.api.getSubsection}/${row.id}`).then(res => {
+        this.$get(`${this.api.curriculumGetSubsection}/${row.id}`).then(res => {
           this.previewing = true;
           this.loadIns = Loading.service();
           this.$route.fullPath.includes("#file") || history.pushState({ file: true }, "文件预览", "#" + this.$route.fullPath + "#file");
@@ -715,20 +736,12 @@ export default {
       this.sectionNameVisible = true;
     },
     switchFile (row) {
-      this.uploadList = []
-      this.curFile = {
-        fileId: row.fileId,
-        fileName: row.fileName,
-        fileType: row.fileType,
-        fileUrl: row.fileUrl
-      }
+      this.curSection = row
       this.sectionId = row.id
-      this.sectionForm.sectionName = row.sectionName
-
-      this.switchVisible = true;
+      this.switchTypeVisible = true
     },
     switchSubmitFile () {
-      let data = {
+      this.$put(this.api.editSubsectionCurriculm, {
         id: this.sectionId,
         cid: this.id,
         chapterId: this.chapterId,
@@ -738,29 +751,27 @@ export default {
         fileType: this.fileType,
         fileUrl: this.fileUrl,
         originalFileName: this.originalFileName
-      };
-      this.$put(this.api.editSubsectionCurriculm, data).then(res => {
-        this.$message.success("更换成功");
-        this.switchVisible = false;
-        this.getData();
+      }).then(res => {
+        this.$message.success("更换成功")
+        this.switchVisible = false
+        this.getData()
       }).catch(err => { })
     },
     switchSubmit () {
-      if (this.uploading) return this.$message.warning("资源正在上传中，请稍候");
-      if (!this.fileUrl && !this.fileId) return this.$message.warning("请上传资源");
-      this.switchSubmitFile();
+      if (this.uploading) return this.$message.warning("资源正在上传中，请稍候")
+      if (!this.fileUrl && !this.fileId) return this.$message.warning("请上传资源")
+      this.switchSubmitFile()
     },
     delSection (row) {
       this.$confirm("此删除操作不可逆，是否确认删除选中项？", "提示", {
         type: "warning"
-      })
-        .then(() => {
-          this.$del(`${this.api.deleteSubsectionCurriculm}/${row.id}`).then(res => {
-            row.fileUrl && Oss.del(row.fileUrl)
-            this.$message.success("删除成功")
-            this.getData()
-          }).catch(res => { })
-        }).catch(() => { })
+      }).then(() => {
+        this.$del(`${this.api.deleteSubsectionCurriculm}/${row.id}`).then(res => {
+          row.fileUrl && Oss.del(row.fileUrl)
+          this.$message.success("删除成功")
+          this.getData()
+        }).catch(res => { })
+      }).catch(() => { })
     },
     sortChapter (row, type, disabled, index) {
       if (!disabled) {
@@ -803,7 +814,7 @@ export default {
       if (this.previewing) {
         this.closeIframe()
       } else {
-        this.$router.push(this.$store.state.referrer || 'list')
+        this.$router.push(this.$store.state.lesson.referrer || 'list')
       }
     },
   }
@@ -1026,4 +1037,25 @@ export default {
     }
   }
 }
+
+/deep/.source-list {
+  display: flex;
+  gap: 10px;
+
+  li {
+    flex: 1;
+    line-height: 80px;
+    font-size: 16px;
+    text-align: center;
+    color: #333;
+    border-radius: 8px;
+    background-color: #f6f8fa;
+    border: 1px solid transparent;
+    cursor: pointer;
+
+    &:hover {
+      border-color: #062c87;
+    }
+  }
+}
 </style>
\ No newline at end of file
diff --git a/src/pages/lesson/content/source.vue b/src/pages/lesson/content/source.vue
index fe7cfb0..8d483e2 100644
--- a/src/pages/lesson/content/source.vue
+++ b/src/pages/lesson/content/source.vue
@@ -54,6 +54,10 @@
         </div>
       </div>
       <div class="right">
+        <div v-if="$parent.curSection.id" class="m-b-20">
+          <p class="total m-b-10">原资源（共1个）</p>
+          <div v-html="$parent.curSection.name"></div>
+        </div>
         <template v-if="checked.length">
           <div class="flex-between m-b-10">
             <p class="total">已选资源（共{{ checked.length }}个）</p>
@@ -134,6 +138,7 @@ export default {
     // 初始化
     init () {
       this.getCourse()
+      this.checked = []
     },
     // 课程列表
     async getCourse () {
@@ -159,8 +164,8 @@ export default {
       this.course = list
     },
     initData () {
-      this.page = 1;
-      this.getData();
+      this.page = 1
+      this.getData()
     },
     tabChange (index) {
       this.active = index
@@ -264,8 +269,24 @@ export default {
               type: e.cid ? 0 : 1,
             }
           })
-          await this.$post(this.api.combinationResource, result)
+
+          const old = this.$parent.curSection // 需要更换的资源
+          if (old.id) {
+            // 更换资源
+            await this.$post(this.api.replaceResource, {
+              chapterId: old.chapterId,
+              cid: +id,
+              subsectionId: old.id,
+              newResource: result
+            })
+
+          } else {
+            // 批量新增资源
+            await this.$post(this.api.combinationResource, result)
+          }
+
           this.sourceVisible = false
+          this.$parent.switchTypeVisible = false
           this.$parent.getData()
           this.submiting = false
         } else {
diff --git a/src/pages/lesson/detail/index.vue b/src/pages/lesson/detail/index.vue
index 7b176c7..227c93b 100644
--- a/src/pages/lesson/detail/index.vue
+++ b/src/pages/lesson/detail/index.vue
@@ -867,7 +867,7 @@ export default {
     // 返回上一页
     back () {
       this.loadIns && this.loadIns.close()
-      this.$router.push(this.$store.state.referrer || 'list')
+      this.$router.push(this.$store.state.lesson.referrer || 'list')
     }
   }
 };
diff --git a/src/pages/lesson/list/index.vue b/src/pages/lesson/list/index.vue
index 83337e1..aee065b 100644
--- a/src/pages/lesson/list/index.vue
+++ b/src/pages/lesson/list/index.vue
@@ -124,6 +124,7 @@
 <script>
 import Setting from '@/setting'
 import Util from '@/libs/util'
+import qs from 'qs'
 export default {
   data () {
     return {
@@ -137,7 +138,7 @@ export default {
         categoryId: +this.$route.query.categoryId || '',
         professionalCategoryId: +this.$route.query.professionalCategoryId || '',
         professionalId: +this.$route.query.professionalId || '',
-        curriculumType: this.$route.query.curriculumType ? +this.$route.query.curriculumType : '',
+        curriculumType: this.$route.query.curriculumType || '',
         curriculumName: this.$route.query.curriculumName || ''
       },
       page: +this.$route.query.page || 1,
@@ -231,7 +232,7 @@ export default {
     },
     // 缓存当前页面和参数，详情页返回到列表的时候直接取该url
     setReferrer () {
-      // this.$store.commit('setReferrer', `${this.$route.path}?${qs.stringify(this.form)}&page=${this.page}`)
+      this.$store.commit('lesson/setReferrer', `${this.$route.path}?${qs.stringify(this.form)}&page=${this.page}`)
     },
     // 新建课程
     addcourse () {
@@ -357,6 +358,6 @@ export default {
 
 <style scoped>
 .card {
-  min-height: calc(100vh - 300px);
+  min-height: calc(100vh - 374px);
 }
 </style>
diff --git a/src/store/modules/lesson.js b/src/store/modules/lesson.js
new file mode 100644
index 0000000..17a582a
--- /dev/null
+++ b/src/store/modules/lesson.js
@@ -0,0 +1,17 @@
+/**
+ * 成绩相关
+ * */
+export default {
+  namespaced: true,
+  state: {
+    referrer: '',
+  },
+  mutations: {
+    setReferrer: (state, val) => {
+      state.referrer = val
+    },
+  },
+  actions: {
+
+  }
+};
\ No newline at end of file