In view of the problems existing in the coal mine underground safety monitoring, such as the blind area of the monitoring and the arrangement of the safety monitoring sensor, it is difficult to keep up with the progress of the mining face, in this paper, the idea of strong mobility and miniaturization is introduced, and the design method of a new kind of intelligent helmet is proposed, which is based on the integration of various sensors and wireless communication. On the basis of the overall design of the system, this paper introduces the design of the sensor node, the voice module, the video module and the wireless communication module, and the algorithm of personnel location is described.