Underground utility tunnel is a modern and intensive urban public infrastructure and is the inevitable requirement to promote the urban sustainable development. At present, the research on the design of deep foundation pit for underground utility tunnel is few in China. Based on the engineering background of an urban underground utility tunnel, the characteristics of deep foundation pit for utility tunnel are comprehensively analyzed. Aiming at the characteristics of foundation pit in the different environments, combined with the characteristics of the foundation pit and under the condition of no lowering the groundwater, the design schemes of different deep foundation pit support structures are put forward, and are practically applied in an urban underground utility tunnel project, which provides a certain reference for similar projects.