Abstract: For problems that existing coal mine communication systems are overlapping partly in functions and difficult to integrate each other, a new coal mine communication system was designed by use of next generation network technology. The new system integrates existing scheduling communication system, wireless communication system and broadcasting communication system through IP-PBX soft switching platform. The system can realize functions of existing communication systems as well as interconnection and intercommunication of terminals in each system, which helps system upgrading. The test result shows stability and reaibility of the system.