A series of experimental investigations are carried out to study the regular wave and irregular wave acting on the wave transmission and silt deposition of a new-type hollow-block breakwater. At the same time, by comparing wave transmission coefficient of two kinds of hollow-block breakwater which have different hollow rates and solid breakwaters, we can get statistical analysis results of the experiment data. It shows that when choosing the appropriate hollow rate, hollow-block breakwater can also reach the almost same wave transmission coefficient of solid breakwater, and can achieve a certain effect on promoting the deposition, which means that the method of selecting hollow block as the structure of submerged breakwater is reasonable and effective.