Abstract: Networking alarm data types of coal mine safety monitoring and control system were analyzed. For coexisting problem of real alarm data and pseudo alarm data, a networking alarm data screening technology of coal mine safety monitoring and control system was proposed, and some key technologies were expounded including automatic identification of false alarm data of monitoring devices, automatic identification of sensor calibration data and breaking test data of three locking, automatic identification of sensor fault data, contrasting and analysis of real testing data by human and monitoring data, sensor identification in plane domain, etc. A networking alarm data screening platform of coal mine safety monitoring and control system was developed. The application result shows the platform can improve alarming accuracy rate of safety monitoring and control system.