Abstract: In order to make up the limitations and the defects of traditional design methods of BIM core modeling software Autodesk Revit in water conservancy project design,that is,Revit lacks the stability calculation and structural calculation and analysis module for water conservancy complex structure,a secondary development for Revit was carried out by using Revit API toolkit,WPF interface development,MVVM program development mode,C # programming language and sluice retaining wall stability standard calculation method.A set of calculation plug-in with simple operation,fast response,high accuracy and good visualization effect were designed for the stability analysis of sluice retaining wall,and it was applied to the calculation and analysis of retaining wall stability of Dingbo water conservancy project.The results showed that the plug-in realized the stability calculation with high precision and efficiency.The human-computer interaction,with characters of high visualization and easy operation,realizes the real-time judgment of the calculation results by integrating the plug-in with standard method.It not only makes up the lack of module of hydraulic structure stability calculation in Revit,but also improves the work efficiency of water conservancy designers,and lays a good foundation for further application of BIM technology in other sluice structure design.