In order to study the effect of stylobate on the seismic responses of Yingxian Wooden Tower, the models of octagonal stylobate, the upper timber frame and the overall structure are built by ANSYS finite element software. The modal analysis method is used to obtain the natural frequencies and periods of the model. The direction of the weak horizontal stiffness of the upper timber structure is obtained, and seismic wave excitation is input to the upper wooden structure and the overall structure model respectively. Then the seismic responses of the two models are compared and analyzed. Results show that the octagonal stylobate has a higher natural frequency and all frequencies are relatively close. And when the high-order frequency of the upper timber structure is close to that of the stylobate, the stylobate obviously affects the dynamic properties of the upper timber structure. The east-west direction of the wooden tower is the direction of weak horizontal stiffness.Compared with other seismic wave excitations, the acceleration and displacement responses of the upper timber structure and the overall structure model are greater when the long-period Tianjin wave is input. As the peak acceleration of the inputting excitation increases, the dynamic coefficients only considering the structure decrease.Under the excitation of the same type of seismic wave with the same peak acceleration, the acceleration and displacement response of the overall structure are greater than those of the upper timber structure.