Abstract:The oil-sunflowers were treated with saline liquor and non-saline liquor by soil-less cultivation at theseedling period. The growth indicators such as fresh weight, plant height, root length and the physiological indica-tors such as chlorophyll content, MDA content, antioxidase activities were measured. The saline resistances of 13oil-sunflower varieties were evaluated comprehensively by membership function, clustering analysis and rank corre-lation analysis. The results showed that the saline resistances of 13 oil-sunflower varieties at the seedling periodwere divided into 4 groups by clustering analysis, five strongest salt resistant varieties, five stronger salt nonresistantvarieties, two weaker salt resistant varieties and 1 weakest salt resistant variety. The membership function analysisshowed that the saline resistance of YK02 was the strongest, and the saline resistance of YK10 were weakest. Therank correlation analysis showed that root fresh weight, aboveground fresh weight, plant height, root length, SOD ac-tivity, POD activity were significant positive correlated with the saline resistance, so these traits could be regardedas evaluation indexes of the oil-sunflower saline resistances.