Abstract: A kind of regional coordinated control substation in underground coal mine is designed. The substation is based on the high-performance STM32 series MCUs. It has rich buses and network interfaces, and can implement system data access and upload of sensors, card readers, and broadcast terminals. While realizing local control output in emergency situations, by driving card readers of personnel location and emergency broadcast terminals, the multi-dimensional ways of sound, image and other methods are used to command personnel to evacuate the dangerous area, to prevent further deterioration of the situation.