Teaching method of grouping and numbering the experimental animals refers to management of laboratory animals by marking them with numbers. In an experimental group

the same marked experimental animal is performed surgery operation by each group member. As a whole

each group member gets the same score according to the evaluation of operation performance of that group and the score is recorded as usual performance score. This method is simple and easy to implement. It is the optimizing of traditional basic operative surgery teaching methods which is conducted not only to improve medical students' sense of responsibility and animal protection awareness

to make full use of teaching resources and reduce waste

to cultivate medical students' team cooperation awareness

but also to deepen medical students' knowledge about surgical complications and improve the quality of teaching.