diff --git a/src/components/drawers/AddOnline.vue b/src/components/drawers/AddOnline.vue
index 2fd642be..3ff692e8 100644
--- a/src/components/drawers/AddOnline.vue
+++ b/src/components/drawers/AddOnline.vue
@@ -3,11 +3,11 @@
     <slot></slot>
   </div>
   <a-drawer
-      :visible="visible"
-      class="drawerStyle addonlineDrawer"
-      width="800"
-      title="添加在线"
-      placement="right"
+    :visible="visible"
+    class="drawerStyle addonlineDrawer"
+    width="800"
+    title="添加在线"
+    placement="right"
   >
     <div class="drawerMain">
       <div class="header">
@@ -17,9 +17,9 @@
       </div>
       <div>
         <div class="contentMain" style="padding:20px">
-          <CreateOnline ref="onlineRef" :id="props.id" :type="props.infoType">
+          <CreateOnline ref="onlineRef" :id="props.courseSyncFlag?'':props.id" :type="props.courseSyncFlag?'':props.infoType">
             <a-button type="primary" style="border-radius: 4px">{{
-                taskIndex === -1 ? '选择/新建课程' : '重新选择'
+                taskIndex === -1 ? "选择/新建课程" : "重新选择"
               }}
             </a-button>
           </CreateOnline>
@@ -27,10 +27,10 @@
       </div>
       <div class="drawerMain">
         <a-table
-            :columns="columns"
-            :data-source="selectsData"
-            row-key="id"
-            :pagination="false"
+          :columns="columns"
+          :data-source="selectsData"
+          row-key="id"
+          :pagination="false"
         />
       </div>
       <div class="main_btns">
@@ -41,7 +41,7 @@
   </a-drawer>
 </template>
 <script setup>
-import {defineEmits, defineProps, ref, watch} from "vue";
+import {computed, defineEmits, defineProps, ref, watch} from "vue";
 import {message} from "ant-design-vue";
 import CreateOnline from "@/components/drawers/CreateOnline.vue";
 
@@ -50,15 +50,16 @@ const props = defineProps({
   infoType: Number,
   courseSyncFlag: Number,
   id: Number,
-  taskList: []
-})
-const visible = ref(false)
-const onlineRef = ref(false)
+  taskList: [],
+  chapterList: []
+});
+const visible = ref(false);
+const onlineRef = ref(false);
 const taskIndex = ref(-1);
 const rowSelectKeys = ref([]);
 const selectsData = ref([]);
 
-const emit = defineEmits({})
+const emit = defineEmits({});
 const columns = ref([
   {
     title: "课程名称",
@@ -73,7 +74,7 @@ const columns = ref([
     key: "type",
     width: "100px",
     align: "center",
-    customRender: ({record: {type}}) => ({10: '微课', 21: '直播', 20: '录播', 30: '面授', 90: '混合'}[type]),
+    customRender: ({ record: { type } }) => ({ 10: "微课", 21: "直播", 20: "录播", 30: "面授", 90: "混合" }[type]),
   },
   {
     title: "创建人",
@@ -96,64 +97,71 @@ const columns = ref([
     width: "100px",
     align: "center",
   },
-])
+]);
 watch(taskIndex, () => {
   if (taskIndex.value >= 0) {
-    rowSelectKeys.value = []
+    rowSelectKeys.value = [];
   }
-})
+});
 
+const selectIds = computed(()=>props.chapterList.flatMap(t=>props.infoType===1?t.taskDraftDtoList:t.draftTaskList)?.filter(s=>s?.type===props.type).map(t=>t.courseId).join(',') || '')
 
 const closeDrawer = () => {
-  visible.value = false
-  taskIndex.value = -1
-  selectsData.value = []
-  rowSelectKeys.value = []
+  visible.value = false;
+  taskIndex.value = -1;
+  selectsData.value = [];
+  rowSelectKeys.value = [];
 };
 
 function confirm() {
   if (!selectsData.value.length || !rowSelectKeys.value.length) {
     message.warning("请选择在线课！");
-    return
+    return;
   }
   if (taskIndex.value === -1) {
-    const list = props.taskList
+    const list = props.taskList;
     list.push({
       name: selectsData.value[0].name,
       type: props.type,
       courseId: selectsData.value[0].id,
-      info: {...selectsData.value[0]}
-    })
+      info: { ...selectsData.value[0] }
+    });
   } else {
-    const data = props.taskList[taskIndex.value]
-    data.name = selectsData.value[0].name
-    data.courseId = selectsData.value[0].id
-    data.info = selectsData.value[0]
+    const data = props.taskList[taskIndex.value];
+    data.name = selectsData.value[0].name;
+    data.courseId = selectsData.value[0].id;
+    data.info = selectsData.value[0];
   }
-  emit('update:taskList', [...props.taskList])
-  closeDrawer()
+  emit("update:taskList", [...props.taskList]);
+  closeDrawer();
 }
 
 function selectCourse(row) {
-  console.log(row)
-  if(!props.courseSyncFlag && !row.refId){
+  console.log(row);
+  if (!props.courseSyncFlag && !row.refId) {
     message.warning("请新建本项目在线课！");
-    return
+    return;
   }
-  rowSelectKeys.value = [row.id]
-  selectsData.value = [row]
-  onlineRef.value.closeModal()
+
+  if (selectIds.value.includes(row.id)) {
+    message.warning("本项目中已经包含此在线课！");
+    return;
+  }
+
+  rowSelectKeys.value = [row.id];
+  selectsData.value = [row];
+  onlineRef.value.closeModal();
 }
 
 function openDrawer(i, row) {
-  window.selectCourse = selectCourse
+  window.selectCourse = selectCourse;
   row && (rowSelectKeys.value = [row.courseId]);
   row && (selectsData.value = [row.info]);
   (i >= 0) && (taskIndex.value = i);
-  visible.value = true
+  visible.value = true;
 }
 
-defineExpose({openDrawer, selectCourse})
+defineExpose({ openDrawer, selectCourse });
 </script>
 <style lang="scss">
 
diff --git a/src/views/learningpath/LevelAddDetail.vue b/src/views/learningpath/LevelAddDetail.vue
index ec7aea99..ed2773b0 100644
--- a/src/views/learningpath/LevelAddDetail.vue
+++ b/src/views/learningpath/LevelAddDetail.vue
@@ -141,7 +141,7 @@
         <div class="mid">
           <div class="item" v-for="(value,key) in TASK_TYPE" :key="key">
             <component :is="value.component" :ref="el=>courseRef['el'+key]=el" :type="key" :infoType="2" :id="routerInfo.routerInfo?.id"  :courseSyncFlag="routerInfo.routerInfo?.courseSyncFlag"
-                       v-model:task-list="routerInfo.chapterList[activeIndex].draftTaskList">
+                       v-model:task-list="routerInfo.chapterList[activeIndex].draftTaskList" :chapter-list="routerInfo.chapterList">
               <div class="itcon">
                 <div class="img">
                   <img :src="value.img"/>
diff --git a/src/views/projectcenter/TaskAdd.vue b/src/views/projectcenter/TaskAdd.vue
index 2c663af0..044ad9a1 100644
--- a/src/views/projectcenter/TaskAdd.vue
+++ b/src/views/projectcenter/TaskAdd.vue
@@ -101,7 +101,7 @@
           <div class="item" v-for="(value,key) in TASK_TYPE" :key="key">
             <div v-if="key!=13">
               <component :is="value.component" :ref="el=>courseRef['el'+key]=el" :type="key" :infoType="1" :id="projectInfo.projectInfo?.id" :courseSyncFlag="projectInfo.projectInfo?.courseSyncFlag"
-                         v-model:task-list="projectInfo.stageList[activeIndex].taskDraftDtoList">
+                         v-model:task-list="projectInfo.stageList[activeIndex].taskDraftDtoList" :chapter-list="projectInfo.stageList">
                 <div class="itcon">
                   <div class="img">
                     <img :src="value.img"/>