Abstract: The paper pointed out that M2M platform of Internet of things of sensor mine should provide open interfaces for services of application layer and suit to requirements of perfecting "six systems" for safe act of rescue, leaders going into mine and disaster monitoring of coal mine. It gave four-layer structure of Internet of things of coal enterprise, pointed out that construction of Internet of things of sensor mine is a key of construction of Internet of things of whole coal enterprise and main functions of the other layers should be safety and resource management of coal mine, and analyzed application modes of Internet of things of coal enterprise of mining group, province and the state. At last, it proposed problems which need paying attention to in construction of Internet of things of sensor mine.