With a case from Xueshan and Longjie in Weining County, Guizhou province, this paper tries to apply the approach of anthropology to analyze the occupational group endogam in traditional Yi society.

• 本文拟以贵州威宁雪山、龙街为例，运用人类学研究方法，初步探讨彝族传统社会中存在的行业内婚。