Abstract: In order to demarcate the drought resistance yield index, using the winter wheat varieties of dry-land wheat in the regional test in north part of China as trial materials, DRC, SSI, DRI and DI were studied. The results showed that it was different the wheat varieties drought resistance measurement and the wheat germplasm resources screening with drought resistance, DRC expressed the stable yield ability of the wheat varieties, it was clearer to jig drought resistance wheat germplasm resources. Compared with the wheat varieties as contrast, DI included the opposite yield (drought resistance coefficient) and absolute yield of the wheat variety, it was more operational to combine the drought resistance measurement with the regional test and wheat varieties yield experiments. Therefore, the DI would be the comprehensive drought resistance measured index; it was the most perfect to be used in the wheat varieties regional test and wheat drought breeding.