N. strampelli, a wheat cultivar imported from Italy, has kept resistance to stripe rust for 31 years and grown on large area in southern of Gansu province, where is the most important summer-survival region of Puccinia striiformis West in China and the ideal region to identify the resistance to stripe rust of wheat cultivars. With a infected type of 0- 1, its incidence, severity, disease index and their average change rate were very low, having distinct difference from the three type of check cultivars. N. strampelli was one of the unwonted typical types compared to many durable resistance cultivars which generally bore an infected type of 3- 4 and the resistance controlled by polygenes or major-gene and polygenes together. According to phenotypes of the parents, F1 and F2 progeny, we concluded that its resistance was controlled by the complementary action of two dominant genes and its leaf tip necrosis was controlled by one domant gene. No linkage was existed between stripe rust resistance and leaf tip necrosis. Therefore, leaf tip necrosis can not be used as modal marker of resistance for assistant selection on N. strampelli.