The layout plan of the encircling breakwater is verified by means of the overall physical model test.The results show that:1)The wave peak line in the harbor basin is deflected and the wave energy is concentrated,which results in that the local mooring conditions of the wharf do not meet the standard requirements.When the position axis is rotated 15° clockwise and arranged in parallel with the wave crest line,it meets the requirements.2)According to the standard of whether the wave crossing the embankment hits the wharf axis in the harbor,three elevation shielding functions of 10.0 m,10.5 m and 11.0 m are tested,and the 11.0 m elevation is feasible.3)The 6 t armor block outside of breakwater is unstable,and 10 t armor block is stable after many times of optimization.It is also found that lateral wave forces acted on the linked armor block at the arc turn is more dangerous than the positive wave force.4)The test results are compared with the calculated values of the standard formula,and the test results are all large.Therefore,attention should be paid to the treatment of arc turn section,and the relevant provisions of the axis-included angle required by the standard should be followed.5)The test also verifies the necessity of the physical model test of the three-dimensional harbor basin in terms of block stability,overtopping rate and optimal design.