Smooth particle hydrodynamics (SPH) method was used to establish the tank model,and the liquid sloshing in storage tanks under different roll excitation was simulated.The influences of the tank topology,the number and the height of anti-swaying board on the impact pressure and structural stability of the tank were analyzed.The simulation results show that the SPH method can well simulate the strong non-linear characteristics of the liquid sloshing,and the storage tank with improved trapezoid section can be effectively suppress the liquid sloshing;the reasonable arrangement of the anti-swaying board in the oval tank can effectively reduce the liquid centroid and the overturning moment,which is more conducive to maintaining the stability of the tank storage.