This paper mainly analyzes the key points of construction control of new comprehensive pipe gallery under complex environment, and uses technical means such as sealing water, precipitation and informationization monitoring to ensure the control of deformation of surrounding environment, current pipe gallery and pipeline in the gallery during earthwork excavation, the construction stage of connecting the old and new pipe gallery with the cabin in the original comprehensive pipe gallery renovation project. At the same time, the docking module node adopts multiple waterproof measures to ensure the waterproof effect of the structure, in order to provide reference for similar projects in the future through the practice of this project.