1. Mathematics and applied mathematics: including basic mathematics and applied mathematics. Basic mathematics studies the basic theory and development law of mathematics, such as the famous Goldbach conjecture, which is the research object of basic mathematics.

2. Applied mathematics: it is a mathematical theory triggered by a large number of practical problems, which solves problems encountered in real life or other disciplines, science and technology.

3. Statistics is a branch of applied mathematics. In addition to the departments of mathematics and information science, many colleges and universities also have departments of statistics, actuarial science and financial mathematics. The courses of mathematics and applied mathematics pay more attention to basic mathematical theory, and the core courses are analytical basis, advanced algebra, geometry, ordinary differential equations and real variable functions.