The design of port mooring system is related to the safety of ship docking and is one of the hotspots in the ship and ocean engineering research.In previous studies,less consideration was given to dynamic loads.In this paper,the design of port mooring system is studied on the basis of dynamic load.Firstly,the force situation of steel pipe,steel drum,heavy ball,welding anchor and anti-drag anchor is mainly analyzed,and then the system force situation model is established based on the force balance equation and the catenary model,using genetic algorithm for numerical simulation;finally,the inclination angle of steel pipe and steel drum,the chain shape,the draft depth and swimming area of the buoy are obtained by MATLAB programming,and the influence degree of each influencing factor on the mooring system is discussed.