The invention provides a recovery method of graphite in waste batteries and an application thereof and relates to the field of battery recovery. The recovery method of graphite in waste batteries comprises the following steps: S1) pickling and purification: providing graphite slag generated in waste battery recovery as a recovering raw material, and then pickling the graphite slag to remove impurities to obtain primarily purified graphite; S2) removing pyrolytic carbon; and S3) coating and carbonizing graphite to obtain a graphite material. By means of the recovery method, the technical problems that the specific surface area of the graphite material recovered by an existing graphite recovery method is large, the processing property is poor and the primary efficiency of the battery as an anode material is low can be alleviated.