The last course of mathematics in the college entrance examination is still on sale. According to the public information inquired, many learning institutions are now selling the final math training courses for the college entrance examination, which can be purchased online, such as Taobao, Tmall, JD.COM and other shopping malls, or from nearby bookstores. The final course of college entrance examination mathematics consists of a series of well-written topics. Systematically combing the core skills and problem-solving ideas of postgraduate entrance examination mathematics can not only improve students' learning efficiency, but also enable candidates to achieve the best results in the exam.