The invention relates to a surface coating method for an LiNi0.5Mn1.5O4 material. The method includes: subjecting lithium carbonate, nickelous oxide and manganese dioxide to ball-milling in a ball mill tank loaded with mill balls to form a surface coated slurry precursor, carrying out drying to form a surface coated LiNi0.5Mn1.5O4 material precursor, and performing heat treatment on the precursor. The method is characterized in that: the ball mill tank is a corundum ball mill tank; the mill balls are corundum balls, or mixed mill balls of corundum balls and agate balls, nylon balls or polyurethane balls. The method provided by the invention uses the corundum ball mill tank and mill balls to conduct surface coating on the LiNi0.5Mn1.5O4 material, effectively reduces the dissolution of manganese element in an electrolyte solution, enhances the cycle performance of the material, and meets stable cycle of the battery under high voltage. The method provided by the invention has the advantages of simple making process, low energy consumption and good environmental protection effect, and is conducive to large-scale preparation and industrial promotion of the material.