Graphene has a special twodimensional structure, excellent mechanical,thermal and electrical properties. It was considered to be one of the ideal reinforcement for metal matrix composite. The composite of graphene and magnesium alloy could solve the problems of low strength, low elastic modulus and poor thermal conductivity of magnesium alloy, thereby meeting the property requirements of aerospace, military, automotive and other fields.However, due to the poor wettability and lack of interfacial reaction between graphene and magnesium, the dispersion and interfacial bonding of graphene in the magnesium matrix are the key to the preparation of magnesiumbased composites. The high chemical reactivity of magnesium alloy powder also limites the use of powder metallurgy methods, making it difficult to use other composite material preparation methods as a reference.Therefore, this article mainly explored the preparation technology,main interface design methods and deformation behavior of graphene reinforced magnesium matrix composites, summarized the main problems currently faced by graphene reinforced magnesium matrix composites, and prospected the development trend of graphene reinforced magnesium matrix composites.