For college students, knowledge is not the most important. As long as they have high quality and strong learning ability, they can completely supplement their required professional knowledge in a short time. In particular, the society needs all kinds of talents with comprehensive knowledge and skills, and what major to study becomes less important. Moreover, people with different majors can be conducive to the exchange of knowledge in various disciplines, make up for each other's lack of professional knowledge, and bring new thinking modes, thus bringing vitality to the work and promoting the development of the work.