Abstract: In his study, we took practical engineering as the basis, used the finite element software Ansys to make numerical simulation for the structure of reinforced concrete cylindrical silo wall and carries. Through the Modal Analysis, weobtained the silo structure's natural frequency and cycle.On the basis of Modal Analysis, weused the time history method, input TAFT earthquake wave,carried on the dynamical finite element analysis to the model structure,obtained the crown of the structure displacement time interval curve under earthquake function, discovered the time at which the biggest displacement occurred,and drew up the whole structure stress chart and the whole structure distortion chart in this time. At last,according to different stores-material operating mode,the study analzed the earthquake response of the structure under the TAFT earthquake wave function, also obtained the corresponding conclusion.Thestudy can provide theoretical basis for the seismic design of similar structures.