First of all, you must have a teacher qualification certificate in the corresponding discipline, and then see if there are any professional restrictions on the recruitment brochure. Major is not limited. No problem.

There are five postgraduate majors in mathematics, namely, basic mathematics, applied mathematics, probability theory and mathematical statistics, computational mathematics, operational research and cybernetics.

The future development direction of basic mathematics is basically to engage in theoretical research. If you want to stay in colleges and universities (undergraduate, Ph.D. at least 2 1 1 colleges and universities), you have to continue to study PhD. Applied mathematics can go to enterprises to engage in applied work; Probability theory and mathematical statistics can go to financial institutions and engage in economic work; Computational mathematics is biased towards computers; Operations research and cybernetics tend to be automated.