The result of examination is important for students. The score of exam is not only related to the students’ usual effort, but also has business of the review before taking the exam. How to review before exam? According to my own experience, I have three suggestions. First, control your emotion well. Do not too nervous or too confident, just keep a normal mind. Secondly, try you best to review the exercise you have done before, but do not do new exercise, especially the difficult part. Third, read the knowledge in the book, because all the exams are from books. This is my suggestion.