In a previous paper, it has been shown that the perturbation method is much, superior to the method of numerical integration in treating the problem of the bending with large deflection of a circular plate by uniform edge moment. Now, we extend the perturbation method successfully to the case of a circular ring plate with one edge clamped and uniform moment along another edge. As in the previous paper, all our results are presented in such a form that the direct application to design problem is possible.