Abstract: Facing the rainless and drought climate in Hebei plain,in order to screen the ideal drought-tolerant and water-saving oil sunflower varieties,16 oil sunflower cultivars which were comparatively widely grown in production in the plain were studied. The biological traits, economic traits, the relative eclectric conductivity（REC） and relative water content （RWC） of leaf were ananyzed under droutht stress condition and their drought resistant indices were also calculated for drought-tolerance identification. The result indicated that different oil sunflower varieties presented great variation in biological traits, economic traits and physiologic indices under droutht stress condition. By a general way of identificatioon, the screened highly drough-tolerant variety resources were Qingfeng No.1, Zaoyou 66 and Ai 58 with DRI （drought resistant index） 1.16, 1.14 and 1.04, respectively, and they were suit for growing in the area.

Key words: oil sunflower, drought resistant, water saving, screening and identification, Hebei province