Elective mathematics in senior high school is closely related to compulsory mathematics. Elective one of senior high school mathematics is the extension and expansion of compulsory two, which has introduced many knowledge points and concepts, and elective one has deeply discussed these concepts and methods, adding more knowledge points and problems. In addition, many contents of Elective No.1 Middle School are also the key examination contents of college entrance examination mathematics, and mastering these knowledge is also of great help to the achievement of college entrance examination mathematics. Therefore, senior high school mathematics elective one and compulsory two are closely related.