The national junior high school mathematics league is one of the most important competitions for junior high school students, and its mode is standardized, which is also one of the goals of many senior high school entrance examinations. Therefore, many junior high school students have increased their efforts to train outstanding students. In a sense, this kind of competition recognized by the public has improved the overall math scores of junior high school students in China. In Beijing, the winning results of the National Mathematics League are often regarded as an important reference for the early admission of key high schools such as the National People's Congress and No.4 Middle School.