There are generally two directions for the postgraduate entrance examination of applied mathematics: one is to specialize in mathematics, which requires that mathematics is particularly good, and you should have enough interest and patience in learning mathematics in the future. The best major in mathematics should be Peking University, but many schools are very good. There is not much difference between this major being too good and not good. The second is the computer direction, which is expected to enter the IT industry. The best schools are Tsinghua, Jiaotong University and so on. Of course, these schools have high scores, and there is also a Northeastern University, which is also good in computers and software, and its scores are not very high. Maybe we can consider it.

It will be easier for students majoring in mathematics to take an examination of other majors, because students majoring in mathematics have natural mathematical advantages. If you are good at math and interested, you can consider majoring in communication and economics, which will have a good employment prospect in the future and give full play to your talent in math. See what you like, others can't decide anything for you, and the standard of good or bad is different for everyone. But this scientific mathematics has a wide range of choices, such as statistics, actuarial science, econometrics, mathematical finance, financial engineering, management, logistics, computer, communication engineering, electronic power and so on. (refers to the professional prospects and employment prospects). The schools you can choose are Tsinghua, Jiaotong University, Zhejiang University, Xiamen University, Nankai (for majors) and so on. Mathematics belongs to the basic discipline, postgraduate entrance examination. Therefore, I suggest you choose an applied major you are interested in, so that you can not waste what you have learned in this science, but also do the postgraduate entrance examination for your interested mathematics major. Five directions, basic mathematics, applied mathematics, computational mathematics, probability theory and mathematical statistics, operational research and cybernetics, there is always one for you! If you are not satisfied, choose a major closely related to mathematics, such as computer or economics (finance).