Mathematics and applied mathematics is one of the specialties offered by the School of Mathematics, which focuses on the application of mathematics. It is basically the same as other majors in the School of Mathematics (computational mathematics, statistical mathematics, pure mathematics), except for a few courses. At that time, you can also take postgraduate degree courses in other mathematics majors. Computational mathematics focuses on algorithms and needs to be programmed on a computer, which has certain requirements. Statistical mathematics focuses on the study of statistical related courses of probability theory, while pure mathematics is theoretical. In fact, as long as all the mathematics courses in the School of Mathematics are taken as elective courses as far as possible, there is no need to limit yourself to your major when you graduate, and the employment impact will not be too great. At present, there is a certain pressure on undergraduate employment in mathematics college. I suggest that you finish the undergraduate course in the School of Mathematics first, and then take the cross-disciplinary exam. Can take an examination of economics and management, computer, control engineering and other majors. This kind of scientific mathematics is of great help to your further study. I hope I can help you.