Since the operation of the high and low pressure lubrication system of the rolling mill motor,frequent failures have occurred,which poses potential risks to the safe operation of the equipment.The causes of the failure of high and low pressure lubrication system was focused on.A technical transformation plan was given for the motor lubrication system.After the project was put into use,the system was stable in operation,the downtime was significantly reduced,and all technical indicators met the operational requirements.