Abstract: The monitoring system of regional linkage fan is designed for the characteristics of distribution, process flow and operation, and monitoring requirements of coal mine fan system. The KXJ 220 controller based on PIC micro-controller is suitable for coal mines with gas and coal dust explosion hazards. Siemens WINCC is selected as the host software core, and data communication is conducted using industrial Ethernet platform. The remote monitoring and control of pressure fan system are realized. The system has the parameters of the pressure fan, operation record, alarm, inquiry and other display functions; the system provides single machine in situ, remote control, design and realization of the regional linkage control function of the fan. The regional linkage control provides the guarantee of safety, reliability and energy saving for the unattended and inspected pressure fan monitoring system.