Abstract
The two-point correlation function of the 2D Ising model with small concentration of impurity bonds ( nu imp<r sigma 0) approximately 1/R1/4 for r<nu exp(c1/ nu imp) to ( sigma R delta 0) approximately exp>R, which implies the change of the critical index from 1/4 in the pure Ising model to 0 in the model with impurities.