This paper summarized the advances in development of rice differentials for pathotyping of blast fungus in the past nearly 50 years,and introduced the methods and techniques to develop rice monogenic differentials and near isogenic lines and their application in pathotyping of blast fungus. The objective of this review is to provide some reference for developing our own rice near isogenic lines for blast resistance,and for establishing the monitoring techniques of avirulence genotypes of blast pathogen popu...