In this report, we propose an analytic model for masonry walls, the validity of which was then verified by applying the model to a simplified deformation analysis method obtained from the results of shaking table tests with models. Furthermore, we discuss the method's applicability to quakeproof reinforcement works. The analytical results corresponded well to the results obtained from experiments; therefore this method can be reliably applied to the design of quakeproof masonry. We will continue an in-depth study to enable this method to be applied to the quakeproof design of real masonry walls.