When carrying out the 3D design of sluice projects of traditional hydraulic engineering，most of them use reverse modeling techniques.The native functions of main stream 3D modeling software only support modeling，but lack the 3D design process for sluice.Hence，it leads to low efficiency of 3D design and difficulty in completing the forward design of BIM.In order to improve the efficiency of 3D design of sluice，quickly form 3D design results，realize BIM forward design of sluice and support digital delivery of design results，this paper develops 3D design system of sluice based on standardization of sluice design and Bentley platform.This system realizes the standardization of 3D design of sluice construction and the parametric establishment of the model (basically one-click generation)，providing a solid foundation for the forward desgin of BIM and digital delivery of the results of the follow-up sluice projects.