The National Undergraduate Mathematics Competition is a national high-level discipline competition for undergraduates, sponsored by the Chinese Mathematical Society. Its purpose is to increase college students' interest in learning mathematics, cultivate their ability to analyze and solve problems, discover and select innovative talents in mathematics, and promote the construction and development of mathematics courses in colleges and universities. The ability and potential of the first prize winner in the field of mathematics are usually considered excellent. The students who won the first prize in the competition fully exercised and improved their basic knowledge of mathematics and thinking ability. Not only has a solid basic knowledge of mathematics, but also can use this knowledge to solve practical problems, and has strong innovation ability and problem-solving ability.