The vigorous development of BIM technology realizes the transition of engineering design from 2D drawing to 3D model，but there is a large amount of modeling work and the secondary development is a high threshold. Aiming at the problems of complex manual modeling and many repetitive components in the design modeling of water transportation engineering，we introduce Dynamo visual programming platform，apply the visual programming and parameterized modeling method，calculate the relative position relationship of model components by boundary conditions along the front of wharf and land terrain，use Dynamo node to call Revit family library to set up the model of wharf frontier frame and modify the model parameters，solve the problem of repeated work and error of 3D manual modeling，and improve the speed and precision of modeling. It provides references for the deep application of BIM technology in the 3D modeling of water transport engineering.