There will be some difficulties in the re-examination of mathematics in Minzu University of China. According to official website of Minzu University of China, the re-examination of mathematics major in Minzu University of China is mainly to test candidates' mastery of advanced mathematics and related mathematics courses. The content of re-examination usually includes interview, written examination and other links, covering basic mathematics knowledge, mathematical and physical ability, thinking ability and many other aspects. Candidates need to have a solid foundation of advanced mathematics, strong logical thinking and ability to analyze problems, and be familiar with the relevant contents of their own mathematics major.