A numerical model of the scour is established using FLOW-3D software to understand the scour characteristics of the suction bucket jacket foundation. The model simulates the scour situation under different water depths, flow velocities, and angles of attack. The simulation results show that: the wake of the front bucket foundation is of a weakening effect on the scour depth of the rear bucket foundation, which can reduce the scour depth by 35% to 50%, and when the flow angle is 60°, the scour depth of the rear bucket foundation is minimum; the overall scour is less affected by water depth, and the scour conditions are similar under different water depths; the flow velocity is one of the main factors affecting the scour depth, with the increase of the flow velocity, the scour depth also increases, and the overall relationship is linear. The scour situation of the suction bucket jacket foundation is comprehensively evaluated to provide basis for further scour protection.