College entrance examination is an important means for colleges and universities to select talents. Its examination syllabuses and requirements serve as guidelines for middle school education and also as indicators for higher education. In this paper I made an analysis of the current situation and problems of maths education by discussing the solution to a math question in 2018 Sichuan College Entrance Examination and students’ performances on that question, so as to confirm the necessity of combining higher and elementary math educations.