Based on the analysis of natural conditions and boundaries,numerical model of wave field of each construction phase was set up using MIKE21 wave stimulation model on the background of Ashdod port project.The wave propagation within the harbor was obtained by numerical analysis under different construction stages along with the results of the maximum working wave heights and unavailable working days.Reasonable schedule of construction was made and working window was selected according to the results.Moreover,this paper provides a scientific and reasonable construction procedure for the Ashdod port project.