Abstract: The paper introduced network architecture and configuration, site accessing subsystem and security measures of integrated automation system of Fengjiata Coal Mine. The system uses a three-layer network architecture, uses gigabit industrial Ethernet as backbone, and realizes access of each subsystem by Ethernet communication modules and Ethernet electrical ports. Practical application showed that the system can achieve connectivity and sharing of information between different subsystems, so as to take advantages of information and equipment resources of each monitoring subsystem, which achieves the purpose of mine safety production and downsizing for efficiency.