diff --git a/StreamLearn/legacy/README.md b/StreamLearn/legacy/README.md
index 66b70e134a0c63f520a28381942bcf1802ebe45e..d71d59fa270d86fd2088c7a998447959c1d266f9 100644
--- a/StreamLearn/legacy/README.md
+++ b/StreamLearn/legacy/README.md
@@ -1118,6 +1118,8 @@ python scripts/script_finetune.py --dataset ml-1m --K 5 --train_size 64 --train_
 
 ## 课题五：流数据增量学习算法
 
+### 5.1 增量学习算法MEMO
+
 该算法主要包含`增量学习数据集构造`，`MEMO算法实现`，`性能测试`三部分，相关代码参见目录：
 - StreamLearn/Dataset/CILDataset.py
 - StreamLearn/Algorithm/ClassIncrementalLearning/MEMO.py