For a light breakwater structure,the anti-sliding stability is an important part to calculate the stability of the new breakwater under the wave load.Due to the complexity of the structure,there isn’t any stipulation yet on the computation method of the anti-sliding stability for this new breakwater structure.We assume that the stability of an embedded new bucket breakwater mainly depends on the soil pressure on the wall,the shear stress at the bottom of the bucket,and the self-weight of the bucket and the soil in the bucket.The bucket and the soil in it are regarded as an entirety.Such a breakwater works under a similar principle as a gravity retaining wall.Supposing that the bucket rotates around the rotating centre of the bucket,the soil on the wall of the harbor side is under passive state,and the soil on the wall of the sea side is under the active state.It supposes that the soil pressure on both ends of the bucket wall reaches the passive soil pressure state and active soil pressure state respectively under the ultimate state,and at the same time,the shear stress under the bucket also reaches its ultimate state.Based on the above-mentioned hypothesis,by means of derivation and analysis,the computation method of anti-sliding stability of 3D embedded new bucket breakwater considering the influence of the rotation is established.