At present, lightweight products are the pursuit of modern technology. Magnesium alloys are becoming more and more valued, because of its low density, high specific strength and specific stiffness characteristics. According to statistics,90% commercial magnesium alloys are used under die casting process. As engineering material, fatigue fracture is one of the most important failure modes of magnesium alloys. Based on that, research on low cycle fatigue behavior of die-cast magnesium alloys have a certain pr...