It comprises an upright post fixed on the ground, an arc-shaped frame fixed at the top end of the upright post, two arc-shaped handrails fixed on both sides of the arc-shaped frame respectively, and a backing plate fastened on the arc surface of the arc-shaped frame by bolts. The pad is made of wood or plastic. The upright post comprises a square steel pipe, and an aluminum profiled pipe is tightly installed outside the square steel pipe, and four corners of the aluminum profiled pipe are provided with long grooves, and wooden strips or plastic strips are embedded in the long grooves. Mainly exercises the back and waist, with good effect, simple structure, low manufacturing cost, novelty and beauty. Used for outdoor and outdoor fitness paths for people to exercise their backs and waists.