Lubricating oil is an important resource in our modern lives, it will give rise to severe contamination if we dump or bury the waste lubricating oil randomly. Due to environmental requirements and making full use of resources,the process of reclamation, reprocessing and rerefining for waste lubricating oil develops rapidly. In this paper, the typical process of waste oil recovery at home and abroad was introduced. On the basis of reviewing the process characteristics, environmental protection and economic b...