Big bone class is the abbreviation of college students' training class. Its function is to continuously improve the ideological and political quality, policy and theoretical level, innovation ability, practical ability and organization and coordination ability of college students' backbone through effective ways such as education, training and practical exercise.

The big bone class is divided into three stages: concentrated training, self-training and follow-up training. Divided into summer classes and winter classes, relying on the advantages of location and cultural resources in Yimeng old district and the province, theoretical research, social investigation, experiential teaching and social practice are carried out. Students enter the follow-up training period after graduation, and establish a student tracking information base to help graduates continue to learn and communicate; Strive to provide organized suggestions for the career development of outstanding students.