Abstract: MEP emergency management is an important part of property management in the large commercial and public buildings. BIM technology can effectively assist to maintain, especially reduce the difficulty that repair workers understand the complex MEP system. At the same time, it can avoid checking a lots of drawings and related documents, improving the accuracy and efficiency of the daily maintenance and emergency repair. This paper focuses on the research of key technology and software implementation method which based on BIM model in the emergency management of MEP.