In this paper,a new method,the successive substitution method,is presented for bending of cir-cular thin plate loaded by axial symmetrical force on elastic foundation. By this method, the generalformula is obtained for the process of successive substitution,and the convergence of the successivesubstitution method is proved.The method introduced by this paper is simple and reliable.And it canconverge on the exact solution. It can also be applied directly to the bending of circular thin plate withelastic foun...