The technical characteristics and development history of magnetic-optical-electric hybrid storageis are reviewed, and its key technologies and research status are summarized, including storage system structure, some key technologies of software and hardware, as well as related standard formulation and patent applications. And the development trends of hybrid storage technology are described. The future for the development of magnetic-optical-electric hybrid storage is prospected. This review will help researchers to understand magnetic-optical-electric hybrid storage more systematically, clearly and accurately, and contribute to the development of big data storage in the future.