In view of the current problems of low efficiency,incomplete design tool chain,and poor systematicness in the design of inland waterway engineering,research on the development and application of design modules for inland waterways is carried out based on BIM technology.Secondary development is carried out using OpenRoads Designer,and through the preset template generation rules,the function of parametrically establishing waterway and revetment section templates has been realized.The revetment structure types cover the commonly used gravity,slope,and pile foundation structures in inland waterways.By establishing a comparison table of waterway mileage sections and section templates,the one-click generation function of waterway models is realized.By slicing the three-dimensional BIM model,the statistical function of the dredging and embankment backfilling quantities by the section method has been achieved.Combined with the method of custom annotations,the function of batch automatic drawing the cross-sectional diagram of waterway dredging has been realized.Using WFP interface technology,a modular and process-oriented digital design system for inland waterways has been formed.The system has been applied based on specific projects,the conclusion shows that using this system can save 30%-50% of manpower in the design stage.