Fitness bicycles are mainly used for fitness, and their main characteristics are dual power of hands and feet, with a speed of 40 km/h; There are many ways to work and the fitness effect is good. When riding this kind of bicycle, both hands and feet can do work on the bicycle drive at the same time, or they can do work with their hands or feet alone. Adopting the straight line method of pulling the pedal and the swing method of pulling the swing lever by hand not only improves the running speed of the bicycle, but also exercises the leg muscles and arm muscles.