In order to investigate the effect of the acid rain in the acidic atmospheric environment on the seismic behavior of masonry structures, the acid rain accelerated corrosion test and pseudo-static test were conducted by taking eight identical specimens as the research object in this paper. The results indicated that: the seismic behavior of the walls showed no obvious degradation in initial corrosion stage, even some of them appeared a phenomenon of a slight increment compared with non-corrosion walls. The elastic stiffness, cracking load, and limit bearing capacity all decreased at the different degree with the increase of the cycle number.