Regarding the problem that the participants of the waterway regulation project cannot accurately reflect the actual situation of the project and cannot clearly express the reporting ideas when communicating and reporting，based on BIM，we develop the BIM+GIS three-dimensional interactive reporting system of the waterway regulation project. The system uses the SuperMap GIS platform to realize the data integration and performance optimization of the waterway BIM+GIS，and quickly loads the processed BIM+GIS data through the unity plug-in，realizing the flexible operation and efficient integration of BIM+GIS data and traditional documents. The system has been applied in the waterway regulation project of Wu’an section. Through the interactive communication report of the integration of BIM+GIS data and PPT documents，the cooperation and communication efficiency between the participating units has been improved，and the promotion and application of BIM technology in the channel regulation project have been further promoted.