Distinguish between students at public expense, students entrusted by other units and students entrusted by this unit to give preferential treatment.

First of all, comparing the training certificates of different hospitals, there must be differences. For example, the training certificate of medical beauty hospital is only related to medical plastic surgery all day, but the training certificate of relatively professional hospital is more professional, the application field is different, and the content of each training is different. The types of training certificates are determined according to the training contents.

Standardized training for residents originated from 1993. The Ministry of Health issued the Notice on Implementing the Trial Measures for Standardized Training of Clinical Residents. The standardized training of clinical residents is an important part of medical students' post-graduation education, mainly focusing on clinical practice, professional compulsory courses and public compulsory courses.