Abstract: A stationary exercise bicycle including a base frame, a seat supporting assembly, a seat assembly being movably mounted on the seat supporting assembly to be guided along a path inclined at a selected angle related to the ground surface. The stationary exercise bicycle further comprises an assistance member attached to the seat assembly for providing an elevation force for a seat position adjustment. The present invention provides a stationary exercise bicycle with a benefit of quick, easy and convenient seat position adjustment, a benefit of grabbing a heart rate grip or touching a control console comfortably, a benefit of reducing abdomen compression of a user, and a benefit of an elevation force for assisting a seat position adjustment.