For a long time, most of the urban pipelines in China have been laid underground separately. However, with the continuous expansion of urban construction, the number and scale of various urban pipelines are increasing, and the problems caused by separate underground laying are becoming increasingly serious. Obviously, more efficient, convenient, and safer management methods and technical means must be sought. At the same time, fully utilizing the underground space has become an inevitable trend, especially when the urban surface is already very crowded. The utility tunnel is an underground tunnel system that integrates urban infrastructure such as pipelines, cables, and communication lines. Constructing utility tunnels can make the utilization and management of urban infrastructure more efficient. Using the first phase of the Science Avenue Utility Tunnel in Chongqing and its internally laid pipelines as a research case, this article calculates the costs of laying urban pipelines using utility tunnel and separate underground laying, analyzes the costs, and provides relevant suggestions for the laying method of urban pipelines.