An elastic finite element program was employed as the basic analysis tool to investigate the bending behaviors of concrete perforated brick. The mechanical properties of elements were assumed to conform to a given Weibull distribution to reflect the heterogeneity of concrete perforated brick. The fracture process, including crack initiation, propagation etc. was observed. Parametric studies, including the wall thickness, rib thickness, cavity rate and homogeneity index, were also carried out. The results indicate that the flexural strength increases with the increase of wall thickness and homogeneity index, while decreases with the increase of the cavity ratio. The numerical results were in good agreement with the experimental investigations.