The main reducer, grate cooler and roller press of rotary kiln are the core equipment in the daily production of cement factory, and the normal operation of the equipment affects the production capacity and economic benefit of the whole enterprise. At present, the management methods for these main equipment still stay in the stage of conventional lubricating oil sampling and inspection, the frequency of inspection is different, the method of taking oil and the secondary pollution in the transportation process may lead to the authenticity of the data, coupled with the impact of timeliness, it is not possible to determine the quality of lubricating oil and equipment failure through the indicators of lubricating oil in a timely manner. Therefore, for enterprises, it will cause oil waste caused by inaccurate and timely addition of lubricating oil and equipment failure problems caused by timely detection of equipment maintenance problems, and may even cause unplanned and unplanned downtime, resulting in huge economic losses for enterprises, and serious personal safety problems. Therefore, if we can provide an effective online real-time monitoring program for the lubrication system of the core equipment of the cement plant and achieve scientific management and diagnosis of the core equipment, we can not only help the enterprise solve the problem of oil waste and excessive inventory pressure of spare parts in the warehouse, but also effectively understand the safety problems of equipment operation, which can play a very important role in improving the work efficiency of the enterprise.