The invention discloses a rail type body-building unicycle, which comprises a
saddle, a
handle, a framework, fixing rollers, a
sprocket, pedals, a
bevel gear, a chain, a hub, a small gear, a rotating shaft and a mud guard, wherein the framework matched with a rail is mounted on the rail through the fixing rollers, the mud guard is arranged on the outer side of the framework and mounted on the rotating shaft, the
saddle and the
handle are arranged on the mud guard, the pedals are connected with the rotating shaft, the
sprocket and the small gear are connected with the pedals through the rotating shaft, the
sprocket is connected with the
bevel gear through the chain, and the hub is sleeved on the framework and meshed with the small gear arranged in the hub. The rail type body-building unicycle is energy-saving and environment-friendly, integrates body-building together with entertainment and is capable of converting
kinetic energy generated during body-building of people into
kinetic energy for movement of other mechanisms or equipment.