The integration of four certificates specifically refers to the 5+3 collaborative training mode of clinical medicine, that is, the master's degree certificate, graduate diploma, medical practitioner qualification certificate and regulatory training certificate are all completed during the training period and serve as graduation conditions. The four-in-one certificate of medical graduate students is a master's degree, and it is very hard to study medicine, especially clinical medicine. It takes a lot of effort to get this four-in-one certificate.