Temporary wave blocking facilities are used to provide certain protection for construction ships with poor sea conditions. Airbag-type floating breakwater with convenient transportation，convenient delivery，and low cost has become one of the preferred wave blocking and wave elimination measures. A stable numerical wave flume is established by adjusting the grid division，controlling the time step，and encrypting the free liquid surface network. The hydrodynamic model of airbag type floating breakwater is established by using the same scale of the original physical model test，and the accuracy of the numerical calculation scheme is verified by the test results under the condition of the physical model test. The calculation results show that the calculation results within the range of 3 m after blocking the wave model are accurate，and the error of the wave height is within 1%. The variation law of the calculated value with time under the numerical simulation scheme is in good agreement with the test results. The numerical simulation scheme is feasible and effective，and the numerical simulation results have an available reference，which can provide a calculation basis for the subsequent research on the selection of various temporary wave containment facilities.