Enrollment expansion, also known as college enrollment expansion, university enrollment expansion or college enrollment expansion, including graduate enrollment expansion, undergraduate enrollment expansion and higher vocational enrollment expansion, refers to the national education reform policy to solve economic and employment problems and expand the enrollment scale of colleges and universities. The implementation of this policy has enabled more people to receive higher education. There are many ways to expand enrollment, including graduate enrollment, undergraduate enrollment and higher vocational enrollment. Among them, the enrollment expansion of graduate students refers to the expansion of the scale and the increase of the number of graduate students facing the whole country; Undergraduate enrollment expansion refers to the expansion of undergraduate enrollment scale and the increase of quota for the whole country; The expansion of enrollment in higher vocational colleges refers to the expansion of enrollment scale and the increase of enrollment in higher vocational colleges nationwide. Through enrollment expansion, the number of college students will increase, which can improve the national quality and talent reserve level and promote economic and social development. At the same time, enrollment expansion is also conducive to alleviating the current social employment pressure and promoting economic growth. It should be noted that enrollment expansion is not free, and college students need to pay tuition fees or enjoy relevant subsidies provided by the school. In addition, the implementation of the enrollment expansion policy also needs to consider issues such as educational equity, so as to ensure that students in all regions and types of schools can enjoy fair educational resources.