Abstract: The paper analyzed problems of traditional coal mine safety monitoring and control system, studied on structure, performance, working principle, layered architecture and key technologies of coal mine safety monitoring and control system in the environment of Internet of Things. It described changes of main components of the system and concept and significance of logical substation, and pointed out that there were many issues need to be addressed such as developments of new procedures, standards and sensors with low-power consumption to realize coal mine Internet of Things.