Abstract: in order to solve the problems of backward automation level, low production efficiency, inaccurate data collection and real-time monitoring of traditional shearer memory coal cutting technology, a shearer monitoring system based on memory coal cutting method was designed. This monitoring system takes PLC s7-300 as the control core and carries out real-time monitoring of parameters of each part of the shearer fuselage. On the one hand, it can effectively improve the precision of coal cutting in memory of the shearer and realize the automatic coal cutting in the triangle area, And then improve the working efficiency and automation level of memory coal cutting, in addition to effectively reduce the failure rate of coal mining machine. The system is composed of shearer memory cutting system, shearer monitoring system and upper machine interface, and the specific design scheme is given.