"Three Supports and One Support" is a policy implemented by graduates at the grassroots level, which means that after graduation, college students go to the rural grassroots level to engage in supporting agriculture, teaching, helping doctors and helping the poor. The working time is generally 2 years, and a certain living allowance is given during the working period.

The policy basis of this plan is document 1999 1 1. 16 Notice on Organizing College Graduates to Teach, Support Agriculture, Support Medicine and Help the Poor in Rural Grassroots Units issued by the Ministry of Personnel in 2006. Its purpose is to provide concrete guidance and guarantee for college graduates to implement the employment problem at the grassroots level.