Abstarct: In this study, composite berm breakwater has been introduced as a new conceptual model. The understanding of composite berm breakwater is gained by studying the activities of berm breakwater. At first, the definition, importance and necessity of reviewing the subject has been addressed. After a literature review of studies, conducted in conjunction with the berm berakwater, caisson breakwater and a new breakwater, experimental study and numerical modeling of composite berm breakwater is expressed. This model is modeled in three modes by introducing composite berm breakwater design relationships. Numerical modeling of composite berm breakwater is done by numerical model Flow3D. To verify the correct and acceptable results of a numerical model, a numerical model can be verified and calibrated. Validation results of the Flow3D numerical model represent acceptable results. To obtain armor forces in the composite berm breakwater in three modes of the berm including the end of the berm, the beginning of the berm and on the slope; the stability of the armors has been investigated. The results indicate the ability of the Flow3D numerical model to calculate the forces on the armor. With the numerical modeling of the composite berm breakwater, one can obtain the pressure on the caisson and wave overtopping. The results are then compared with horizontally caisson breakwater, rubble mound breakwater and caisson breakwater. Composite berm breakwater has a desirable performance in terms of reducing caissson pressure and reducing overtopping. Also, in assessments of armor forces, caisson pressure and wave over topping in composite berm breakwater; third mode composite berm breakwater (Iceland) is recommended.