In response to the problem that the wave incidence angle has a significant impact on the wave height in the harbor in seaports with navigational channels,based on physical models and wave numerical models,the influence of the wave incidence angle on the wave height in the harbor under different wave height,period,and channel size conditions is systematically analyzed.The results show that when wave incidence angle θ≤30°,the wave height in the harbor decreases with the increase of the period,and increases with the decrease of the water depth in the waterway.When 30°＜θ＜40°,the wave height in the harbor is basically not affected by the period.When θ＞40°,the wave height in the harbor increases with the increase of the period.In addition,when θ＜40°,the smaller the channel width and the steeper the slope,the greater the wave height in the harbor.When θ≥40°,channel width and channel slope have little influence on wave height in the harbor.When θ＜ 30°,the smaller the water depth in the channel,the greater the wave height in the harbor.When θ≥50°,the greater the water depth in the channel,the greater the wave height in the harbor.The wave height inside Jieyang Port is the maximum when the wave incidence Angle is 30°~40°,and corresponding engineering measures should be taken to reduce the adverse impact of this wave direction on the mooring stability of ships in the port.