Because most project accidents can not be explained by constitutive models in which the localization is not taken into consideration
now the study of localization and the formation of shear band in soil have become an important research field in soil mechanics. Numerical simulation is an important method researching into the formation of shear bands. In this paper
research is done on the condition of the formation of shear bands. Then the formation of shear band in different situations is analyzed by considering the non-homogeneity of soil and introducing weak and strong elements.