In order to study the effect of the opening hole on mechanical properties of L shaped short pier shear wall, applies ANSYS finite element software to investigate the mechanical properties of short pier shear wall of different opening rates under the unchanged cross-sectional dimensions and reinforcement rates of the wall, and analyzes the bearing capacity and yield displacement. The simulated results show that the bearing capacity decreases with the openings rate increment and the bottom of the web as well as the opening position of the short pier shear wall are the weakest. Opening holes will reduce the mechanical properties of short pier shear walls under monotonic loading, and the opening diameter on short pier shear walls should not be too large.