As one of the next-generation energy-storage devices,Li-O_2 battery has become the main research direction for the academic researchers due to its characteristics of environmental friendship,relatively simple structures,high energy density of 3500Wh/kg and low cost.However,Li-O_2 battery cannot be commercialized on a large scale because of the challenging issues including high-efficient electrocatalysts,membranes,Li-based anode and so on.In this review,we focused on the recent development of electrocatalyst materials as cathodes for the non-aqueous Li-O_2 batteries which are relatively simpler than other Li-O_2 batteries’ structures.Electrocatalysts were summarized including noble metals,nanocarbon materials,transition metals and their hybrids.We points out that the challenges of preparation high-efficient catalysts not only require high catalytic activity and conductivity,but also have novel nanoarchitectures with large interface and porous volume for LiO_x storage.Furthermore,the further investigation of reaction mechanism and advanced in situ analysis technologies are welcome in the coming work. As one of the next-generation energy-storage devices, Li-O 2 battery has become the main research direction for the academic researchers due to its characteristics of environmental friendship, relatively simple structures, high energy density of 3500Wh / kg and low cost.However Li-O 2 battery can not be commercialized on a large scale because of the challenging issues including high-efficient electrocatalysts, membranes, Li-based anode and so on. This review, we focused on the recent development of electrocatalyst materials as cathodes for the non-aqueous Li-O_2 batteries which are relatively simpler than other Li-O_2 batteries’ structures. Electrocatalysts were summarized including noble metals, nanocarbon materials, transition metals and their hybrids. We points out that the challenges of preparation high-efficient catalysts not only require high catalytic activity and conductivity, but also have novel nanoarchitectures with large interface and porous volume for LiO_x storage. Futurerther, the fur ther investigation of reaction mechanism and advanced in situ analysis technologies are welcome in the coming work.