本文研究世居在特高海拔藏族人和中度高原的汉族人在微循环方面的不同。其结果表明：藏族人微循环加权积分值高于汉族人，有显著性差异，P＜0．01；藏族人微动脉细、微静脉扩张，有显著性差异，P＜0．01；藏族人微血管数目减少；红细胞聚集、血流缓慢、白色微栓、出血、水肿、渗出、网格状血管网增加等方面藏族人多于汉族人。藏族人在微循环方面有其显著的自身特征。 This paper studies the differences in microcirculation of Han nationality living in the Tibetan Plateau and the moderately high altitude. The results showed that: Tibetans microcirculation weighted integral value higher than the Han people, there was a significant difference, P <0.01; Tibetan arterioles, venules dilation, there was a significant difference, P <0.01; Tibetan The number of capillaries decreased; erythrocyte aggregation, blood flow was slow, white microthrombus, hemorrhage, edema, exudation, increased network of gridded blood vessels and so on more Tibetan than Han nationality. Tibetans have their own distinct characteristics in microcirculation.