One side of the Pilates orthodontic device has a gentler curve while the other side is steeper, which can meet the needs of various Pilates movements and body postures. Improve poor posture and effectively flexible the spine, such as hunchback, anterior pelvic tilt, cervical extension, scoliosis, etc. Strengthening muscle endurance, shaping the body, enhancing the sense of body essence and balance, and achieving better control over one's own muscles can help the legs reach a relatively balanced state as much as possible. Strengthen the stability of the shoulder straps and pelvis to create a beautiful body curve.