The wave breaking energy modulus of offershore submerged breakwater have influences on coastal engineering .In order to discuss the wave breaking energy modulus, of want to change dimensions of submerged breakwater by processing experiment of my model. In addition ,we want to change dimensions of submerged breakwater by processing experiment of my modes.We adopt un-transmission structures,and change structure height ,structure width ,distance from structure bottom to ocean bed .We discuss this three points to acquire the best dimension of submerged breakwater .It is suibable for shorter and longer period wave ,and protecting coast further.Experiment results have showed some conclusions. When submerged breakwater height is 32cm ,structure width is 164cm, and the distance from structure bottom to ocean bed is 16cm ,we both have haven better efficiency of wave breaking and economic .
