In order to solve the problems of chaos and inefficiency in traditional metro emergency management, this article firstly analyzes the elements of emergency management: organization, supplies and emergency plan. Secondly, emergency management system based on security map is established to handle the problem of low level of emergency information management in metro construction. The system successfully realizes the integration, standardization and Visualization of emergency information. Finally, the article discusses that it is not accurate enough to use paper-form emergency plan to guide the rescue work when an accident happens. In order to improve the scientific soundness and effectiveness of the emergency plan, a metro emergency plan management model based on casereasoning is constructed to provide decision support for emergency rescue activities.