Abstract: In order to effectively improve the personnel management level and prevent accidents, the safety block chain is proposed, and a safety information management mode for coal mine employees based on block chain technology is designed. Based on the characteristics of the block chain data records, the entire process of safety-related data and information of coal mine employees during their work is recorded to construct a complete personal safety information chain, and establish a safety quality information storage evaluation system for coal mine workers. In order to apply the safety block chain model to engineering practice, the fusion technology of the safety block chain and the mine personnel positioning system is discussed. The second customization of the personnel positioning system is carried out to realize the multi-network and multi-system fusion, which can carry out the safety management of the underground workers’ safety behavior in real time. This mode innovates the management mode of coal mine safety information and broadens the application field of block chain technology. It can realize the integration of multi-network and multi-system of integrated automation system of coal mine and improve the overall level of coal mine safety management.