Due to the special construction process, difficult safety control, and high requirements for the effluent quality of underground sewage plants in high-density urban built-up areas, higher requirements was forward for the operation and management of these sewage plants. Through the application of information technology such as BIM technology, wireless pulse UWB positioning technology, precise dosing, and precise aeration, refined management of sewage plants was achieved, ensuring that the treated water quality meets the standards and achieves low-carbon operation. It is also an exploration of new models of digital operation management.