In the building of hydro-power station, the inlet tower structure of the spillway tunnel is an important building to ensure the realization of the flood discharge function of the hydro-power station. The tower inlet is a tower-shaped junction against the bank slope. The shaft type water inlet is a gate arranged in the shaft, which is generally suitable for the part of the bank slope is slow and the inlet section has good conditions for forming holes. In this project, the slope of the water inlet is steep and the topographic elevation is low. If the shaft intake is used, there is no condition for the layout of the shaft, and the position of the shaft is close to the left dam abutment, which conflicts with the layout of the dam, so the inlet type is chosen as the tower type. In order to study the rationality and seismic resistance of the design of the intake tower of a hydro-power station preferably, the numerical simulation of the intake tower is carried out based on the finite element analysis method. At the same time, the vertical stress and maximum principal stress of the typical position of the intake tower under two working conditions are given. The calculation results show that the stability of the intake tower is good and the design of the intake tower is reasonable, which provides a scientific basis for the design and construction of the intake water tower and similar research.