Among the above classification methods, the last three are mainly used in amateur sports schools, sports colleges and training teams. According to the general classification method, we can know the course of injury.Degree, but can't be used in sports practice. Because in sports training, there are many injuries that do not hinder daily life (no symptoms when not training). According to the classification of general doctors, it belongs to minor injuries or injuries that are not considered, but it belongs to sports technical injuries that seriously affect training and performance improvement.