Mathematical formulas for postgraduate entrance examination are the basic knowledge of mathematics, including various functional formulas, calculus formulas, linear algebraic formulas, probability theory formulas and so on. These formulas are very important in solving problems and learning mathematical theories, and candidates need to master them skillfully and use them flexibly. Candidates need to deepen their understanding and memory of formulas and learn to use mathematical thinking to solve problems through a lot of practice and summary, so as to improve their mathematical literacy and problem-solving ability. In a word, mastering the mathematical formula of postgraduate entrance examination is one of the keys to getting good grades.