Taking the composite sea embankment arc crown wall as the research object,three main factors,including water depth,wave period and wave height,were chosen to carry out the orthogonal test.Sixteen test schemes were designed by choosing four levels to each parameter stated above by L16（43）orthogonal table to study the influencing significancy of the wave loads on composite sea embankment arc crown wall.Meanwhile,the wave pressure distribution and schedule change rule of wave loads are studied.The results show that there’s no fixed relationship between each two point pressures for the wave pressure distribution.However,the wave pressure on the lower part of the arc crown wall surface is generally greater than that of the upper part as a whole;In the process of a single wave cycle,the horizontal wave force has two peaks,while there are three peaks of the vertical force.The second peak of vertical wave load and the first peak of horizontal wave load appear almost simultaneously,which is the worst moment for the stability of the arc crown wall;The effect of water depth on arc crown wall wave loads is the most significant,that of wave height secondly,and the impact of wave period is relatively minimal.