Abstract:With the speed of urbanization, as the basic lifeline to ensure the normal operation of the city, the construction and development of municipal facilities is particularly important. In the context of ecological protection and sustainable development, in order to promote the healthy development of municipal facilities, digital transformation of urban major municipal facilities is a necessary path. The digital transformation of municipal facilities will take the establishment of municipal infrastructure intelligent management platform as the goal, through the comprehensive perception and automatic collection of the operation data of municipal facilities, realize the intelligent early warning and emergency treatment of municipal problems. Based on the urban underground space, road traffic, water, environmental protection, emergency fire, city information model (CIM) and so on, the article respectively summarizes the process of combing the digital transformation work foundation, regulations, policies and standards, domestic and foreign advanced experience, the bottleneck problem and development trend. At last, suggestions to digital transformation of major municipal facilities put forwards.