The examination of "three basics" in the mathematics examination questions of postgraduate entrance examination is paid more and more attention, and candidates should attach great importance to it. In the review of the basic stage, we should remember: master all the knowledge points required by the syllabus, don't miss any knowledge points, go deep into the English reference books for postgraduate entrance examination to understand the basic concepts, remember the basic theorems and formulas, master some basic problem-solving methods and skills, and constantly summarize the problem-solving methods. Many students have such a problem: they can understand the knowledge points and examples told by the teacher in the basic class, but they still don't know how to start when they encounter similar problems after class. This shows that many students have not summarized the contents of the class in time, mastered the knowledge points firmly and thoroughly, and have no overall knowledge framework for the subject. Therefore, when doing some basic exercises, candidates should analyze the conditions of the topic and the conclusions to be proved, find the knowledge points that link the conditions with the conclusions, and keep practicing, so as to achieve the purpose of drawing inferences from one example to another. As we all know, the intensive course in summer is the fastest stage to get marks in mathematics, but in order to make full use of this course and achieve the best results, we must learn the basic knowledge and master the basic methods in psychology postgraduate entrance examination at this stage, otherwise the summer course will become a note-taking class.