Abstract: A stepping machine including a base frame having an upright stub tube and an upright shaft, the upright stub tube having two horizontal axles and two connecting plates respectively turned about the horizontal axles, an upright post revolvably mounted on the upright stub tube and having a transverse handlebar at the top, a pedal support revolvably mounted on the upright shaft and coupled to the upright support in a parallel relation, two pedals respectively turned about a respective horizontal axle on the pedal support, and two hydraulic cylinders bilaterally connected between the pedal support and the free ends of the pedals, each pedal having a downward rod at the fixed end and coupled to one connecting plate.