Abstract: The digital mine construction based on the internet of things integrates originally isolated mine safety and automation system into a platform, completely solves the mine information subsystem of "information isolated island" problem, and realizes the combination of the underground environment, personnel monitoring, voice, video and automatic control. In the coal mine accident, this system can carry out information management, sharing and analysis, and provide the decision information and solution, and automatically feed back to the system and relevant equipments for mine safety.