The invention discloses a method for pretreating waste 
mineral oil and performing hydrogenation regeneration to produce lubricating 
base oil. The method is characterized in that: pretreatment of the waste 
mineral oil sequentially comprises the following steps of performing 
sedimentation dehydration, washing, centrifuging by using a disc-type 
centrifuge, centrifuging by using a horizontal 
centrifuge, evaporating by using a scraping film 
evaporator, and performing reduced pressure 
distillation; preheated lubricating 
base oil enters a hydrogenating device, enters a pre-hydrogenation protection reactor first and then enters the hydrorefining reactor to produce the high-grade lubricating 
base oil. By the method for pretreating the waste 
mineral oil and performing hydrogenation regeneration to produce the lubricating base oil, various non-ideal components in the waste lubricating 
oil can be effectively removed only after pretreatment provided by the invention; the method is simple in steps and is convenient to operate; manpower and 
material resources are saved; the lubricating base oil product is good in quality and high in yield, wastes are not produced, and no 
pollution is caused to the environment; operating conditions are relatively mild, using requirements on equipment are lowered, the regenerating efficiency is increased by 10-15%, 
continuous operation of the equipment is facilitated, and 
pollution of the 
waste oil on the environment and shortage of a 
petroleum product are relieved.