Abstract: Samples of 492 middle school students of Zang, including 183 males and 309 females, were investigated on 13 human population genetics characters. The results are as follows:(1) There are significant differences on 5 characters, including mongoloid fold, eyefold of the upper eyelid, front tooth type, nasal profile and palmar digital fomula;(2) The mongoloid fold, projecting nasal profile, ear lobe appearance, hyperextension thumb and flat nail of Zang have low percentages in Chinese ethnic groups, but there are high percentages in eyefold of the upper eyelid, narrow nostril, curly hair and 12 of plantar digital formula. The percentages of shovel-shaped front tooth, protruding chin, forehead hair point and ring finger have the middle level in Chinese ethnic groups.(3) Correlations are little among 9 characters of head and face,and there are no correlations among 4 characters of hand and foot.The results of cluster analysis show that there are significant differences of the 13 human population genetics characters between Zang from Linzhi and northern ethnic groups.