The invention relates to a fatigue tester for an automotive steering wheel. The fatigue tester comprises a bottom support base, a steering wheel fixation device, an electric cylinder lifting mechanismand a steering wheel test connecting rod mechanism. The steering wheel fixation device and the electric cylinder lifting mechanism are fixed in a T-shaped groove of the bottom support base and are locked by a T-shaped nut. The connecting rod mechanism is connected wit the steering wheel fixation device and the electric cylinder lifting mechanism. A tested steering wheel is fixedly installed at the steering wheel fixation device. When a rotation fatigue test is carried out, a cylinder at the electric cylinder lifting mechanism is connected with the steering wheel by the connecting rod mechanism; and when a push-pull fatigue test is carried out, the cylinder at the electric cylinder lifting mechanism is connected with the steering wheel directly by a tension sensor, an adapter sleeve III, an adapter shaft, an adapter IV, an upper clamp and a lower clamp that are arranged in the lifting mechanism. With the tester, external forces that are easy to apply to steering wheels with different types during the actual usage process can be simulated and thus fatigue testing is carried out.