Urban underground pipeline asset management method and system

The invention relates to an urban underground pipeline asset management method and system. The method comprises the following steps: constructing an underground civil engineering space three-dimensional model and storing the model in a public cloud; an industry use unit obtains the underground civil engineering space three-dimensional model from the public cloud according to a preset requirement, constructs an industry pipeline asset three-dimensional model on the basis of the underground civil engineering space three-dimensional model and stores the industry pipeline asset three-dimensional model in the private cloud; and when underground pipeline data needs to be accessed, the industry user sends an access request to the public cloud through the private cloud, and after permission verification is passed, the industry pipeline asset three-dimensional model and the underground civil engineering space three-dimensional model are subjected to combined display and application. According to the invention, the und