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In order to find optimal regulated deficit irrigation scheduling with saline water for better oil quality, higher yield and safer management of high oleic oil sunflower, a pot experiment was conducted and the principle component analysis method was used to establish a comprehensive irrigation quality index of saline water by the weighted sum of different evaluation indices. Then, this index was applied to evaluate and analyze the performance of saline water deficit irrigation effect. The results showed that comprehensive irrigation quality principle component obeyed normal distribution significantly, and included 93.29% primordial quality attribute variation information with better representation and objectivity, and thus it could be used as the overall oil sunflower regulated deficit irrigation with saline water evaluation index. The critical concentration of saline water for oil sunflower in Hetao Irrigation District is 3.5g/L, and the most suitable period of water deficit is the floral initiation stage. When the concentration of saline water is low (less than 3.5g/L), the regulated deficit irrigation with saline water has less effect on the yield and quality of oil sunflower. When the concentration is 3.5g/L, irrigation scheduling with mild deficit（80%） in floral initiation stage and 27828mm water amount during the total growth period should be the optimal irrigation pattern for saline water of regulated deficit irrigation with the coordinated yield and quality of oil sunflower.