Aimed at the problems of imperfect measures of oil selection and use,a wide variety of oils being used in the equipment of power enterprise,based on the principles of minimizing the type of oils,optimizing the lubrication of equipment and lowering the cost of oils,the optimization of oil used in the equipment of power enterprise was carried out by a big data analysis on the equipment structure and operating condition.Through minimization,some oils of over high grade performance are reduced and the cost of lubricating oil and grease is lowered,the process of equipment lubrication management is simplified and the efficiency is improved.With standardrization of the oils used in all kinds of equipment,faults caused by wrong using oil in some equipment are solved,the wear of equipment is reduced,and the consumption of spare parts is decreased.