The waterway project has the characteristics of long construction period and many affecting factors.In the various stages of design,construction and maintenance of waterway engineering,with the increasing demand for refined management,the traditional implementation methods cannot meet the strength and precision requirements of the project.This paper starts with the characteristics of waterway engineering and BIM,and discusses the application of BIM technology in the design,construction and maintenance of waterway engineering.On the premise of ensuring the rationality of the design,the expression and transmission of the design intention can be completed through the BIM model,so as to guarantee the construction quality of the waterway engineering and to play its role in the security and stability of the waterway regulation buildings in the subsequent maintenance stage.