Port & waterway engineering is characterized by a long construction period,tough construction conditions,field construction,over water work and it is affected by the topography,geology,climate,etc.,so the BIM technology of architecture can’t be directly applied to it.This paper analyzes the current application of BIM in port & waterway engineering in the design phase,construction phase and design & construction collaborative application， points out the existing problems of BIM application in the port & waterway engineering and presents corresponding solutions,elaborates the chances of the application of BIM technology in port & waterway engineering to“the Belt and Road”overseas projects,and proposes the idea of 10D-BIM.