This paper introduces the importance of oil lubrication condition monitoring and oil monitoring technology in cement production. By analyzing the physical properties, chemical composition and wear of lubricating oil of cement production equipment, such as lubricating oil kinematic viscosity, moisture, acid value, pollution degree, PQ index, ferrography, anti-emulsification performance, element spectrum monitoring, etc., it is possible to effectively judge the production equipment operating status. Combined with production examples, the process of using oil monitoring technology to judge the operation status of cement production equipment is introduced.