If conditions permit, it is best to prepare for the postgraduate entrance examination in the next semester of junior year (fresh graduates of four-year undergraduate courses), that is, February-March of that year. Postgraduate entrance examination is not as early as possible. Preparing for the exam is a very difficult process. If the front line is stretched too long, it is easy to feel tired and give up. Once there is such a sign, it is difficult to restrain it, which will inevitably affect the mood and efficiency of preparing for the exam later. Mainly according to their own actual situation.