diff --git a/src/api/modules/comment.ts b/src/api/modules/comment.ts
index f54a499..355ee33 100644
--- a/src/api/modules/comment.ts
+++ b/src/api/modules/comment.ts
@@ -29,6 +29,24 @@ export class CommentApi {
     return ApiRequest.get(`/lessons/${lessonId}/comments`, params)
   }
 
+  // 发送课程评论
+  static async postCourseComment(courseId: string, data: {
+    content: string
+    imgs?: string
+  }): Promise<ApiResponse<any>> {
+    try {
+      console.log('🚀 发送课程评论:', { courseId, data })
+
+      const response = await ApiRequest.post<any>(`/aiol/aiolComment/course/${courseId}/add`, data)
+      console.log('✅ 发送课程评论成功:', response)
+
+      return response
+    } catch (error) {
+      console.error('❌ 发送课程评论失败:', error)
+      throw error
+    }
+  }
+
   // 添加课程评论
   static addCourseComment(courseId: number, data: {
     content: string
diff --git a/src/views/CourseExchanged.vue b/src/views/CourseExchanged.vue
index 94a9548..8a55664 100644
--- a/src/views/CourseExchanged.vue
+++ b/src/views/CourseExchanged.vue
@@ -446,11 +446,30 @@
 
             <!-- 左侧边栏 -->
             <div class="sidebar">
-              <div class="sidebar-title">
+             
+
+              <!-- 学期选择器 -->
+              <div class="semester-selector">
+                <select class="semester-dropdown">
+                  <option value="2025-spring">2025年上学期</option>
+                  <option value="2025-fall">2025年下学期</option>
+                  <option value="2024-spring">2024年上学期</option>
+                </select>
+                <div class="dropdown-arrow">
+                  <svg width="12" height="8" viewBox="0 0 12 8" fill="none">
+                    <path d="M1 1L6 6L11 1" stroke="#0088D1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+                  </svg>
+                </div>
+              </div>
+
+              <!-- 开课时间 -->
+              <div class="course-time-info">
+                开课时间：2025.09.01-2026.01.14
+              </div>
+ <div class="sidebar-title">
                 <h2>学习进度</h2>
                 <img src="/images/aiCompanion/fold.png" alt="">
               </div>
-
               <!-- 学习进度 -->
               <div class="progress-section">
                 <div class="progress-header">
@@ -1029,6 +1048,7 @@ import { useMessage } from 'naive-ui'
 // import { useAuth } from '@/composables/useAuth'
 // import { useUserStore } from '@/stores/user'
 import { CourseApi } from '@/api/modules/course'
+import { CommentApi } from '@/api/modules/comment'
 import type { Course, CourseSection, CourseComment } from '@/api/types'
 import QuillEditor from '@/components/common/QuillEditor.vue'
 import DPlayerVideo from '@/components/course/DPlayerVideo.vue'
@@ -1391,14 +1411,36 @@ const loadCourseComments = async () => {
 }
 
 // 提交评论函数
-const submitComment = () => {
-  if (newComment.value.trim()) {
-    // 这里可以调用API提交评论
-    console.log('提交评论:', newComment.value)
-    // 提交成功后重新加载评论列表
-    // await CourseApi.submitComment(courseId.value, newComment.value)
-    // loadCourseComments()
-    newComment.value = ''
+const submitComment = async () => {
+  if (!newComment.value.trim()) {
+    message.warning('请输入评论内容')
+    return
+  }
+
+  try {
+    console.log('🚀 开始提交评论:', newComment.value)
+
+    // 调用评论API
+    const response = await CommentApi.postCourseComment(courseId.value, {
+      content: newComment.value.trim(),
+      imgs: '' // 暂时不支持图片，可以后续扩展
+    })
+
+    console.log('✅ 评论提交成功:', response)
+
+    // 检查响应数据结构
+    if (response.data && response.data.code === 200 && response.data.success) {
+      message.success('评论发布成功')
+      newComment.value = ''
+
+      // 重新加载评论列表
+      await loadCourseComments()
+    } else {
+      message.error(response.data?.message || '评论发布失败')
+    }
+  } catch (error) {
+    console.error('❌ 提交评论失败:', error)
+    message.error('评论发布失败，请稍后重试')
   }
 }
 
@@ -2357,6 +2399,68 @@ onActivated(() => {
   border: 1px solid white;
 }
 
+/* 学期选择器 */
+.semester-selector {
+  position: relative;
+  width: 100%;
+  height: 42px;
+  margin: 20px 0 -3px 0;
+
+  box-sizing: border-box;
+}
+
+.semester-dropdown {
+  width: 100%;
+  height: 100%;
+  background: #E2F5FF;
+  border: 1px solid #0088D1;  
+  border-radius: 4px;
+  padding: 0 40px 0 16px;
+  font-family: PingFangSC, PingFang SC;
+  font-weight: 400;
+  font-size: 14px;
+  color: #0088D1;
+  appearance: none;
+  cursor: pointer;
+  outline: none;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  box-sizing: border-box;
+}
+
+.semester-dropdown:focus {
+  border-color: #0088D1;
+  box-shadow: 0 0 0 2px rgba(0, 136, 209, 0.1);
+}
+
+.dropdown-arrow {
+  position: absolute;
+  right: 16px;
+  top: 50%;
+  transform: translateY(-50%);
+  pointer-events: none;
+}
+
+/* 开课时间信息 */
+.course-time-info {
+  width: 100%;
+  height: 20px;
+  font-family: PingFangSC, PingFang SC;
+  font-weight: 400;
+  font-size: 14px;
+  color: #666666;
+  line-height: 20px;
+  text-align: left;
+  font-style: normal;
+  margin: 0 0 20px 0;
+  
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  box-sizing: border-box;
+}
+
 /* 进度头部样式 */
 .progress-header {
   margin-bottom: 20px;
@@ -5715,6 +5819,7 @@ onActivated(() => {
 .banner-title-section {
   width: 100%;
   margin-bottom: 10px;
+  height: 60px;
 }
 
 .banner-content {
@@ -5722,6 +5827,7 @@ onActivated(() => {
   justify-content: space-between;
   align-items: center;
   color: #000;
+  height: 100%;
 }
 
 .banner-text {