Abstract: In order to effectively improve the operational reliability of mine used air compressors,aiming at the problems of low automation level,poor real-time monitoring data,low accuracy rate and others in the monitoring mode of the air compressor station building in Hulonggou Coal Mine,through distributed unmanned monitoring method,a mine used air compressor intelligent monitoring and early warning scheme based on distributed monitoring and intelligent sensor network is proposed,and the corresponding software and hardware systems are conducted to be designed.The system uses PLC as the core monitoring unit and adopts a master-slave distributed system architecture.A fusion monitoring network is established through multiple intelligent sensors to achieve remote synchronous monitoring of the operating status of multiple air compressors.It can automatically research and judge and warn of various abnormal and fault signals of air compressors,realizing unmanned intelligentization monitoring of air compressor units.Through actual testing,the system has strong real-time monitoring data and high accuracy for air compressors.The fault diagnosis and alarm functions run well,effectively ensuring the safe and stable operation of coal mine air compressors and greatly improving the intelligent operation level of coal mine air compressor units.