The influence of channel excavation on wave propagation in the channel area is significant.Based on the method of wave physical model test,we study the wave propagation law in the channel area after the channel excavation.The result shows that the maximum ratio of the measured wave height to the original incident wave height on the wave approach side is inversely proportional to the wave incident angle,and the minimum ratio of the measured wave height to the original incident wave height on the wave back side is inversely proportional to the wave incident angle.When the wave is of small incident angle,the channel has a strong refraction effect on the wave,and the wave energy attenuation in the channel is also large.Besides,when the incident angle is large,the channel has a weak refraction effect on the wave,the ability of wave’s passing through the channel is strong,and the ratio of the measured wave height to the original incident wave height on the wave approach side is proportional to the spectrum peak period.The smaller the water depth within the channel,the stronger the channel’s refraction effect on the wave,and the greater the wave energy concentration on the wave approach side.