In view of the industry characteristics of the current emergency management work, such as the prominent main responsibility, time efficiency first, limitations and pertinence, combined with the typical problems such as the inadequate implementation of the main responsibility of the coal mine, the nonstandard emergency response and disposal, and the insufficient participation in emergency rescue, taking digital technology, fusion technology and management decision technology as the core, and the idea of disaster chain as the guidance, the coal mine emergency management system architecture was studied, and the emergency management system with major disaster risk monitoring and early warning, emergency auxiliary decision-making, emergency coordination command and emergency summary and evaluation as the main functional modules was developed. The field test results show that the system has reasonable functional architecture and clear business logic, and it has a positive effect on strengthening the digital ability of coal mine emergency management and promoting the scientific and refined emergency management.