Abstract: Firstly, solving methods for dynamic analysis are introduced, which can be largely classified into explicit integration method and implicit integration method, and their advantages and disadvantages are also introduced. Secondly, the simulation method of beam element, column element, shear wall element and slab element in PKPM-SAUSAGE are introduced.Because of the small integration time step and detailed modeling, the amount of calculation will be increased largely."CPU+ GPU" parallel computing technology is used in PKPM-SAUSAGE, and the mesh quality of model is also optimized, which improves the efficiency of dynamic elastoplastic analysis.