diff --git a/src/views/study/coursenew.vue b/src/views/study/coursenew.vue
index 8b56c991..ce4f217c 100644
--- a/src/views/study/coursenew.vue
+++ b/src/views/study/coursenew.vue
@@ -177,7 +177,7 @@
             </div>
             <!-- 课程单元  -->
             <div class="course-units" v-if="tab == 1">
-              <div :style="`height: ${controlHeight}px;overflow-y: auto;`">
+              <div style="min-height: 350px;max-height: 850px ;overflow-y: auto;">
                 <div class="catalog" v-if="courseInfo.type == 20">
                   <div  v-for="(item, index) in catalogTree" :key="index" :name="index">
                     <el-menu