Abstract: The studies on fatigue properties of magnesium alloys in recent years are summarized.The main achievements of fatigue crack initiation and propagation mechanism are described in detail.The influences of the internal and external factors including microstructure,alloying elements,environment condition,surface state,loading condition and temperature on fatigue properties of magnesium alloys are discribed.In addition,the deficiency of current research on fatigue properties of magnesium alloys is analyzed.Based on it,the research direction of fatigue properties are pointed out.