To determine the stable mass of armour units and foot protection blocks for vertical breakwater foundation mound，we summarize calculation methods in Chinese code and other international codes and compare them with the 2D and 3D physical model test data of actual project. The conclusions are as follows：1）Under the condition of long-term large waves，the mass of slope protection stones calculated by JTS 154-2018 is large，indicating that the calculation method of the national standard is no longer applicable under the wave conditions. 2）When the waves come perpendicular to the faceline of the upright wall，the stable mass of the embankment protection block calculated by the improved Tanimoto formula is small，and it is recommended that appropriate conservative consideration should be given in the design. 3）According to extended Tanimoto’s formulas，the stable mass of armour units increases along with bigger incident wave angle（＜90°）. 4）It is suggested that the design scheme of important project should be verified by physical model tests.