Sports nutritionist is a profession to solve the dietary problems of athletes or fitness people. With the improvement of the quality of life, maintaining a healthy and symmetrical figure has become a topic of increasing concern. Compared with foreign gymnasiums, which are generally equipped with fitness and sports nutritionists, there are few "sports nutritionists" in domestic gymnasiums, which is one of the important gaps between domestic fitness industry and foreign countries. Sports nutritionists need to give reasonable exercise prescriptions while scientifically preparing meals for athletes.