Abstract: Taking DPC-2804 motor-driven compressor in Cainan Compressor Station as an example, 4 measures to increase service life for compressor lubricant are put forward, including selecting proper lubricant, adjusting lubricant's injecting volume, integrating lubricating system and control the leakage of lubricant, which can not only prolong care and maintenance period of the compressor, decrease lubricant service cost, but also elongate the service life of the compressor.