As a core component of the transmission chain in wind turbine,gear box plays a vital role in safety and efficient operation of the wind turbine system.The introducing of oil monitoring technology provides an effective technical means for condition monitoring and fault warning of wind turbine’s gearbox.Through the analysis of typical cases of each link in the management of wind power farm lubrication,the important functions of oil monitoring technology in now oil inspection,wind turbine acceptance test,equipment running status tracking and replacing the oil according to quality were introduced.