Abstract: In order to monitor the working state of shearer in real time, a set of monitoring and early warning system of shearer based on MPC5605BK is designed. According to the main parameters of the operation state of the reaction shearer, the detection circuits of voltage signal, current signal, temperature signal, motor speed and running attitude are designed respectively, and the software of the monitoring system is designed to realize the detection and fault alarm function of the running state of the shearer.