Abstract: A simple type pedaling exerciser which includes two arched, symmetrical side supports connected by a pivot rising behind a transverse channel bar, two foot pedals pivoted on the pivot, an intermediate driving wheel and two opposite side driven wheels arranged inside the transverse channel bar in a line, a steel cable wound around the driving wheel with two opposite ends extended through the driven wheels in reverse directions and inserted through holes on the transverse channel bar and connected to the foot pedals respectively. The mid-portion of the steel cable is fixed to the driving wheel so that pedaling either foot pedal downwards causes the other foot pedal to be rotated upwards.