Abstract: Magnesium alloys are the lightest metal materials, with great potential for application in fields such as automotive, aerospace, and biomedical due to their excellent mechanical properties and good biocompatibility.Laser powder bed fusion（LPBF）, as a rapid prototyping technology, has been widely used to manufacture complex structural metal components, providing a broad platform for the development and application of magnesium alloys.Firstly, the defect formation mechanisms of magnesium alloy in LPBF process were discussed and its properties were summarized. Secondly, the relationship between LPBF process parameters and magnesium alloy formability and material properties is studied, and advanced intelligent optimization methods such as experimental design,simulation model and machine learning are evaluated. Then, the effects of alloying elements and post-treatment methods on the microstructure and mechanical properties of magnesium alloys fabricated by LPBF were introduced.Finally, the potential applications of magnesium alloys fabricated by LPBF were discussed.