Professional perspective: biomechanics and anatomy, nutrition, medicine, training technology, teaching ability. These are the most basic. If they are professional and have rehabilitation knowledge of various special groups, compared with these majors, personal trainers are used for the longest time in the projects with members. In other words, the personal trainer major should aim at improving and preventing the physical fitness of ordinary people, athletes, rehabilitated people and special occupations, as well as solving various existing physical problems. Related majors in this field should continue to study. Secondly, the use of various instruments, such as dumbbells and barbells in the early days, and various aerobic instruments in the later period. At present, the most advanced equipment is functional training equipment, so you should keep learning and improving. The development of science will design different training equipment for different groups of people, and personal trainers should make more scientific progress.