In view of the problems existing in the design and construction of a gravity block wharf in North China,such as component collision,low accuracy of engineering calculation and low efficiency of technical handover,we carry out a research on the application of BIM technology in the design and construction of gravity block wharf. By creating a three-dimensional information model for collision inspection,engineering calculation,schedule simulation and visualization of process technology,we solve the above problems and come to the relevant conclusions as follows:visualization of BIM technology reduces communication costs and provides technical means for fine management of engineering;BIM technology can be used to solve the collision problems in the design stage to reduce the risk of rework during construction;the engineering calculation based on BIM model is more intuitive,complete,fast and accurate;using BIM technology to visually preview the construction schedule,the construction technician can be assisted to optimize the construction plan.