As urban water pollution becomes increasingly serious, the sewage treatment process becomes much more complicated, highly complex sewage treatment projects challenge the traditional 2D design and construction management mode. Based on parameterization, visualization, simulation and collaboration, the 4 characteristics of BIM technology, this paper used core softwares of BIM, building sewage treatment structure models, to explore a suitable way for modeling, and based on the 3D building information model, imported the schedule information to form a 4D model, carrying on 4D construction simulation for the model, studied the application of BIM technology in the construction management of sewage treatment project.