Fitness teachers and fitness instructors are all related to human movements, postures and images, but there are also some subtle differences. Generally speaking, bodybuilding teachers mainly teach basic knowledge such as posture and body measurements, as well as the modification of overall image, curvaceous beauty and psychological state. On this basis, the body shape tutor has added personalized guidance and training for individual needs. The cultivation of body coach pays more attention to personal development, forms a unique style and shapes self-confidence. On this basis, students should choose suitable fitness teachers or tutors according to actual needs.