Based on two phase flow and VOF models of software Fluent,a numerical wave tank is established using the UDF function of the software.The wave transmission property of regular waves near a double-barrier penetrated breakwater is studied numerically,and the results are compared with the experimental values.More groups of tests are conducted to study the effect factors of wave transmission property of double barriers penetrated breakwater when d/H＞5.Based on those factors,a modified formula is given,which can be used to calculate the transmitted coefficients of the double-barrier penetrated breakwater in corresponding situations.