Oil refining machines mainly used for processing work of the used oil, to make raw material reach the standards of the national senior oil. The oil contains material that\’s harmful to the environment. Some of these substances are naturally occurring, some are in the process of production or storage, these substances must be removed carefully. Due to the different causes of them, the refining work must take steps under different conditions. According to different crude oil, the refining process can be divided into degumming, deacidification, decoloring, deodorization, degumming, dewaxing and other steps, Can adapt a few of them or all of the process on the basis of oil varieties.