1. Basic textbooks: These textbooks mainly provide students with basic knowledge of mathematics, such as advanced mathematics, linear algebra, probability theory, mathematical statistics, etc. These textbooks usually contain a large number of theorems, formulas and examples to help students master the basic concepts and methods of mathematics.

2. Tutoring materials: This kind of teaching materials mainly provide students with problem-solving skills and methods, such as "Guidance for Review of Postgraduate Mathematics" and "One Problem and One Solution of Postgraduate Mathematics". These textbooks usually contain a large number of exercises and solutions to help students improve their problem-solving ability.

3. Textbooks for the analysis of real questions: This kind of textbook mainly provides students with the analysis of the real questions of the postgraduate entrance examination mathematics over the years, such as "Analysis of the Real Questions of the Postgraduate Entrance Examination Mathematics over the Years". These textbooks usually contain detailed problem-solving steps and ideas to help students understand the questions and difficulties.

4. Textbooks for specialized courses: These textbooks are mainly aimed at postgraduate mathematics of specific majors, such as economics mathematics and engineering mathematics. These textbooks usually contain the mathematical knowledge and methods needed by this major to help students better cope with the exams of specialized courses.

5. Online courses and video tutorials: These textbooks are mainly online courses and video tutorials provided through online platforms, such as large-scale open online courses and Netease Cloud Classroom. These textbooks usually contain rich teaching resources and interactive links to help students flexibly arrange their learning time and progress.

In short, there are many kinds of mathematics textbooks for postgraduate entrance examination, and students can choose the appropriate textbooks to study according to their own needs and interests. At the same time, doing more questions, summarizing more and communicating more are also the keys to improve the math scores of the postgraduate entrance examination.