Including all the previous high school math knowledge. According to the inquiry of "three supports and one support" official website, this paper mainly examines the professional ability test and comprehensive knowledge of candidates, among which mathematics in the professional ability test includes all previous senior high school mathematics knowledge. The policy of "three supports and one support" is implemented by graduates at the grass-roots level, which means that after graduation, college students go to the rural grass-roots level to engage in supporting agriculture, teaching, helping doctors and helping the poor.