The training cost of fitness instructor is about 8000- 19000 yuan. The purpose of professional personal fitness trainer is to bring health to every member of the gym, improve themselves and make themselves more professional. Fitness instructors want to help members achieve health, that is, they should have professional knowledge of sports nutrition, sports anatomy, sports physiology and so on. So that they can make an effective and scientific training plan according to the physical condition of the bodybuilders. ? Help bodybuilders improve their external body shape, adjust their body posture and improve their internal circulation and endocrine, so that bodybuilders can obtain obvious fitness effects after professional guidance.