Because of the urgent demand for weight reduction of automotive and aerospace industry,magnesium matrix composites with low density,excellent mechanical and physical properties have drawn increasing attention and become a research hotspot in the field of advanced materials.In this paper,an overview of recent developments in magnesium matrix composites is provided,covering matrix alloys,reinforcements,the preparation processes as well as the application status.The critical research directions and the challenges of magnesium matrix composites are also summarized.%镁基复合材料具有低的密度、优异的力学性能和物理性能，在汽车、航空航天等领域的应用需求日益增加，成为近年来新材料领域的研究热点。介绍了镁基复合材料基体的分类和不同的增强体类型，论述了镁基复合材料的制备方法及应用现状，并对镁基复合材料的发展进行了展望。
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