Diesel generators are an important part of providing emergency protection for power rooms. In case of emergency, diesel generators (hereinafter referred to as: diesel generators) can work normally and continuously, and daily maintenance is indispensable. It is generally divided into weekly work plans, monthly work plans and annual work plans. Conduct no-load testing on firewood regularly every week to check the operation of firewood. Since no load is not conducive to long-term operation, too low load will cause a small amount of oil leakage at the connections of the left and right exhaust pipes and black smoke from the chimney. Previously, the machine room was changed from empty load for 30 minutes per week to empty load for 10 minutes per week in the subsequent period. Oil leakage and black smoke were obvious. Since then, with operation and maintenance experience, the machine room was changed from empty load to empty load every week. Once, the time remains unchanged for 10 minutes. Conduct on-load tests on the diesel generator regularly every month to check the operation of the diesel generator and the contact status of each power distribution organization. Since there is no fake load built in this computer room, the load is the load of the actual computer room, so changes need to be made and a load notice is sent. In order to reduce the risk of loading and save diesel costs, the original 1 hour per month has been changed to 30 minutes. Shaanxi diesel generators