A waist twisting apparatus may include a base, a supporting portion, and a seat. A platform is formed at a top portion of the base, and a central portion of the platform has a first axle hole. The supporting portion vertically formed on the base comprises a main body, and a first edge and a second edge thereof are respectively formed at an inner edge and an outer edge of the main body. The main body is further connected to a first axle rod and a second axle rod respectively, and the first axle rod comprises a first connecting portion while the second axle rod has a second connecting portion. The wheel is pivotally installed at a bottom portion of the main body. The seat has a bottom shell, and a second axle hole is formed at a center bottom portion of the bottom shell.