Abstract: The resistance to bacterial blight of twenty-six rice varieties bred in recent years，were evaluated by inoculation with eleven Xanthomonas oryzae pv. oryzae (Xoo) strains at the tillering and the booting stages, respectively. The results indicated that the resistance level of most varieties was identical at the two growth stages. Among them, three varieties, including Xinhuangzhan, Hua 201S-1 and XF10450, exhibited high resistance to Xoo with broad spectrum, and their lesion lengths were shorter than 5cm. The other varieties showed different resistance level, four varieties, including Huanghuazhan, Hanyou113, Xinliangyou3411 and Tianyou 145 were resistance to four-five Xoo strains. Whileas, Hanyou 75, Hanyou 715 and 009067 were highly susceptible to fourteen tested strains.Tha other sixteen varieties were middlely susceptible or susceptible.