Based on the constitutive model(CWFS) of friction strength that effects after the cohesion is significantly reduced, the article introduced Russense rockburst criterion into the process of numerical simulation,and studied the influence of different dilation angle on the rockburst regions of tunnel and unit distribution rule when the differences of maximum and minimum principal stress are between 70~80MPa. It analyzed and compared the calculation results with that by using the Mohr-Coulomb strain softening constitutive model. The results show that the brittle failure of surrounding rocks formed V-shaped notches are achieved based on the Russense rockburst criterion of CWFS constitutive model, and the units in the V-shaped notches have taken place serious rockburst;with the increase of dilation angle, the area of rockburst region and the number of rockburst units are significantly increased. The units that difference of maximum and minimum principal stress between 70~80MPa are formed V-shaped region near the outline of V-shaped notch. The results of using the Mohr-Coulomb strain softening constitutive model show that tensile failure regions in surrounding rocks are achieved but shear failure regions are not achieved, the units of that the difference of maximum and minimum principal stress are between 70~80MPa do not form V-shaped regions.