Abstract: A new restoring analytic numerical method based on application of the method of restoring nucleus is developed for solution of viscous flow field in turbine.It makes the problems of storage,speed and accuracy in calculation easy to be solved.This paper offers ideas and methodology of application the method of restoring nucleus to solving viscous flow field in turbine,as well as in curvilinear coordinate system,and demonstrates the procedure of solving flow function integral equations.Finally,a numerical experiment for the two dimensional cascade viscous flow mentioned in reference 1 by the aid of this method has been performed and the results are consistent with the data in reference.1.