对1877名藏汉族中小学生进行了龋病调查,结果:乳牙患龋率,藏族与汉族之间无统计学差异,藏族乳恒牙患龋率男女之间无显著差异与有关报道不一致,汉族恒牙患龋率男女之间有显著差异,乳牙无显著差异,与文献报告一致,藏、汉族龋充填率都很低,藏族更低,分别为1.21％及0.36％。 Caries survey was carried out among 1877 primary and middle school students in Tibet and Han nationality. The results showed that there was no significant difference between Tibetan and Han nationality, no significant difference between Tibetan and Han nationality, The prevalence of dental caries was significantly different between men and women, with no significant difference in deciduous teeth. Consistent with the literature, caries filling rates in Tibetans and Han were very low, with a lower rate of 1.21% and 0.36%, respectively.