This review comprehensively examines recent advances in the preparation methods of magnesium-based hydrogen storage materials, focusing on mechanical ball milling, methanol-wrapped chemical vapor deposition (MWCVD), plasma-assisted ball milling, and organic ligand-assisted synthesis. Each method's principles, processes, key parameters, and modification strategies are discussed in detail. The advantages and disadvantages of these methods are compared, and their impact on hydrogen storage properties is analyzed. The practical application potential of these methods is assessed, considering factors such as hydrogen storage performance, scalability, and cost-effectiveness. Finally, existing challenges and future research directions in this field are outlined, emphasizing the need for further development of high-performance and cost-effective magnesium-based hydrogen storage materials for clean energy applications. This review provides valuable insights and references for researchers working on advanced magnesium-based hydrogen storage technologies.This review comprehensively examines recent advances in the preparation methods of magnesium-based hydrogen storage materials, focusing on mechanical ball milling, methanol-wrapped chemical vapor deposition (MWCVD), plasma-assisted ball milling, and organic ligand-assisted synthesis. Each method's principles, processes, key parameters, and modification strategies are discussed in detail. The advantages and disadvantages of these methods are compared, and their impact on hydrogen storage properties is analyzed. The practical application potential of these methods is assessed, considering factors such as hydrogen storage performance, scalability, and cost-effectiveness. Finally, existing challenges and future research directions in this field are outlined, emphasizing the need for further development of high-performance and cost-effective magnesium-based hydrogen storage materials for clean energy applications. This review provides valuable insights and references for researchers working on advanced magnesium-based hydrogen storage technologies.