diff --git a/api/base.py b/api/base.py
index 8cbf69b..ba57776 100644
--- a/api/base.py
+++ b/api/base.py
@@ -13,7 +13,8 @@
 from api.config import GlobalConst as gc
 from api.decode import (decode_course_list,
                         decode_course_point,
-                        decode_course_card)
+                        decode_course_card,
+                        decode_course_folder)
 
 
 def get_timestamp():
@@ -92,7 +93,21 @@ def get_course_list(self):
         _resp = _session.post(_url, data=_data)
         # logger.trace(f"原始课程列表内容:\n{_resp.text}")
         logger.info("课程列表读取完毕...")
-        return decode_course_list(_resp.text)
+        course_list = decode_course_list(_resp.text)
+
+        _interaction_url = "https://mooc2-ans.chaoxing.com/mooc2-ans/visit/interaction"
+        _interaction_resp = _session.get(_interaction_url)
+        course_folder = decode_course_folder(_interaction_resp.text)
+        for folder in course_folder:
+            _data = {
+                "courseType": 1,
+                "courseFolderId": folder["id"],
+                "query": "",
+                "superstarClass": 0
+            }
+            _resp = _session.post(_url, data=_data)
+            course_list += decode_course_list(_resp.text)
+        return course_list
 
     def get_course_point(self, _courseid, _clazzid, _cpi):
         _session = init_session()
diff --git a/api/decode.py b/api/decode.py
index 7b8e423..bd08e58 100644
--- a/api/decode.py
+++ b/api/decode.py
@@ -25,6 +25,18 @@ def decode_course_list(_text):
             _course_list.append(_course_detail)
     return _course_list
 
+def decode_course_folder(_text):
+    logger.trace("开始解码二级课程列表...")
+    _soup = BeautifulSoup(_text, "lxml")
+    _raw_courses = _soup.select("ul.file-list>li")
+    _course_folder_list = list()
+    for course in _raw_courses:
+        if course.attrs["fileid"]:
+            _course_folder_detail = {}
+            _course_folder_detail["id"] = course.attrs["fileid"]
+            _course_folder_detail["rename"] = course.select_one("input.rename-input").attrs["value"]
+            _course_folder_list.append(_course_folder_detail)
+    return _course_folder_list
 
 def decode_course_point(_text):
     logger.trace("开始解码章节列表...")