Ministry of education. According to the division of disciplines by the Ministry of Education and the proportion of disciplines in colleges and universities, the existing colleges and universities are divided into 13 categories, such as comprehensive, liberal arts, science, liberal arts, engineering, agriculture, medicine, law, literature, management, sports and art, and category B represents the scale of scientific research in colleges and universities. According to the scale of scientific research, existing universities are divided into four types: research type, research teaching type, teaching research type and teaching type. The type of each university consists of the above two parts: the type before and after class. For example, according to the proportion of various disciplines, Peking University belongs to a comprehensive category, and according to the scale of scientific research, Peking University belongs to a research type, so the type of Peking University is a comprehensive research type, referred to as a comprehensive research type. For another example, according to the proportion of disciplines, Tsinghua belongs to engineering, and according to the scale of scientific research, Tsinghua belongs to research type, so Tsinghua's type is engineering research type, referred to as engineering research type.