Any mechanical equipment will wear to different degrees after a long time of use, and the hard tooth surface reducer is the same. If the hard tooth surface reducer is maintained frequently, its service life can be greatly improved. The hard tooth surface reducer has the characteristics of high precision, good contact, high transmission efficiency, stable operation, low noise, small size, light weight, long service life, high bearing capacity, easy disassembly and inspection, and easy installation. Through the results of the damage of the hard tooth surface reducer and the ferrogram analysis of lubricating oil before the damage of this type of reducer, the damage of this type of gear reducer was analyzed in depth, and it was found that the service life of this type of reducer is short According to the concept of active maintenance, an effective method to improve the service life of this type of reducer is proposed from the perspective of use and maintenance. 1. Keep the equipment and the surrounding area clean, free of accumulations and grease. 2. Pay attention to whether there is any abnormal sound during the operation of the reducer at any time. 3. Check whether there is abnormal vibration and whether the temperature meets the regulations. 4. Pay attention to observe the upper and lower joint surfaces and shaft ends of the gear reducer for oil leakage, and eliminate it in time if there is leakage. 5. Through the oil dipstick or oil mirror, check that the oil level should be at the specified position. Regular maintenance of the hardened reducer will prolong the service life of the equipment and improve the work efficiency of the staff. Any mechanical equipment will wear to different degrees after a long time of use, and the hard tooth surface reducer is the same. If the hard tooth surface reducer is maintained frequently, its service life can be greatly improved.