Abstract: ［Abstract］Objective　To research the physical characteristic of the freshman of the Yi，Bai，Han nationality and its relationship with depression. Methods　By the method of cluster sampling，1，712 freshman， include 566 Yi nationality，543 Bai nationality and 603 Han nationality， were measured with Adolescent physical self scale and Beck depression inventory. The data were analyzed by analysis of variance and Spearman correlation. Results （1） By analysis of the physical self characteristic of freshman of Yi，Bai and Han nationality，we found that: there were significant differences in physical characteristic in terms of specific dimensions （F＝5.247，P＜0.01）that there was a higher satisfaction level in Han than in Yi and in Bai about the self stature characteristic by pairwise comparision. （2） The satisfaction level of the boy was higher than of the girl in the self stature characteristic of these three nationalities（F＝4.248，P＜0.05）. （3） In the dimension of physical self about the freshman of Yi， Bai，Han nationality， there was a discrepancy with different levels of depression in the facial characteristic（F＝2.283，P＜0.05） and the negative characteristic（F＝2.396，P＜0.05）， their scores was step-like decreased: no depression＞mild depression＞moderate depression＞major depression.（4）The freshman of Yi，Bai and Han nationality had a significant negative correlation with depression in the dimensions of physical self （P＜0.01）. Conclusions　The level of satisfaction in stature characteristic，the Han student is higher than the Yi and Bai， boy is higher than girl. For freshman of those three ethnic groups， the higher level of satisfaction with their physical self， the lower possibility of depression，in addition that the facial characteristic and negative characteristic affect the level of depression.