Abstract: In order to solve the shortcomings of traditional coal mine safety management, digital twin (DT) is introduced into coal mine safety management. On the basis of the existing digital twin model research, the five-dimensional model framework is selected as the basis of model construction, and then the coal mine gas accident is taken as the research object. The five-dimensional model of digital twin is used to establish the twin model of gas accident, and the operation mechanism of the twin model of gas accident in the actual coal mine safety management is analyzed, so as to realize the prevention and quick response of gas accident in advance. Finally, the house of quality of the digital twin model of gas accident is established by using the quality function deployment tool to accelerate the realization of the twin model of gas accident.