结合国内外镁合金微弧氧化机理的研究成果，重点介绍了镁合金微弧氧化的生长机理，利用光发射谱识别等离子体放电过程中的反应元素，并计算等离子体温度。对镁合金微弧氧化功能膜以及增强相对镁基复合材料微弧氧化陶瓷膜耐蚀性的影响作了简要介绍。概述了在镁合金微弧氧化过程中，不同体系的电解液各自具有的优缺点，及对陶瓷膜结构和性能产生的重要影响。添加剂可以提高电解液的导电性和稳定性，减小陶瓷膜的孔隙率。详细阐述了合金元素、电源类型、电参数和后处理封孔技术对镁合金陶瓷膜结构、形貌及性能的影响。基于镁合金微弧氧化技术的研究现状，对镁合金微弧氧化技术的研究方向进行了展望。

With the research results on the micro-arc oxidation of magnesium alloys, the formation mechanism of micro-arc oxidation coating of magnesium alloys was introduced. Optical emission spectroscopy was used to identify the elements presented in the plasma discharge process and the plasma temperature was calculated. The micro-arc oxidation functional coatings of magnesium alloys were also introduced. Furthermore, the effects of reinforcement phases on the corrosion resistance of micro-arc oxidation ceramic coatings of magnesium matrix composites were reviewed. The advantages and disadvantages of different electrolytes during the micro-arc oxidation were summarized and the significant influence on the structure and properties of the micro-arc oxidation ceramic coatings were analyzed. The additives could improve the conductivity and stability of the electrolyte and reduce the porosity of the ceramic coating. The effects of alloying elements, power types, electrical parameters and post-sealing processing on the structure, morphology and performance of the ceramic coatings were elaborated. Based on the research status in the micro-arc oxidation of magnesium alloys, the development direction in research of the micro-arc oxidation of magnesium alloys is prospected.