Abstract: In order to screen excellent materials for breeding parents, 32 introduced wild potato materials were taken as objects to investigate their phenological stages, plant morphological characteristics, tuber traits and yield. Using fuzzy membership function method and grey relational method, The correlation of drought resistance and 8 indexes such as chlorophyll, yield, water retention capacity, plant height, CAT enzyme, POD enzyme, MDA and Pro were studied, and the drought resistance of 32 materials were comprehensively evaluated.The results showed that excellent early-maturing materials LS 6-6 and late-maturing materials LS 24-6 were screened out; the indicators highly correlated with drought tolerance were yield, followed by chlorophyll and water retention capacity; high drought-resistant materials were LS 40-7, LS 42-8 and LS 64-4.