Prostrate walking three-wheeled exercise bicycle

The invention discloses a prostrate walking three-wheel exercise bicycle. The bicycle comprises a bicycle frame, a handlebar, a bicycle front fork, wheels and pedals, wherein the bicycle frame comprises a cross beam, an oblique beam, an up-down telescopic chain rod and an exercise spring support, the beam is located on an upper portion of the frame, a telescopic part is arranged at a rear end of the beam, a tail end of the telescopic part is connected with a fitness control seat, the bicycle front fork is connected with a front wheel through a connecting bearing, the fitness spring support isarranged in the middle of the cross beam, an up-down telescopic chain rod is arranged at a front end of a telescopic part of the cross beam, a left rear wheel and a right rear wheel are movably connected through a connecting shaft on a triangular support, and a U-shaped shaft is arranged in the middle of the connecting shaft. The bicycle has advantages of being simple in structure, novel in design, high in use comfort, lo