Abstract: An exercise bike for users to exercise in a face-upward manner comprises a pedal section, a connecting tube and a base section. The pedal section locates at the highest point of the exercise bike and has a counting stopwatch and two pedals that can be adjusted to change the resistance of stamping. The base can be placed on a plane and has a pad for lying down and two flexible handles. The connecting tube locates between and connects the pedal section and the base section. Some fasteners are installed on the connecting tube to fasten the connecting tube for fixing the pedal section. When opening the fasteners, the connecting tube and the pedal section can be folded to a small unit for storage to conserve the space.