婚姻家庭是文化人类学中的一个传统课题，长期以来受到人们的重视。在世界上的多种婚姻形态中，最普遍的为一夫一妻的单偶婚，其次为一夫多妻婚。一妻多夫婚则较少，在默道克的世界民族志抽样调查中，只有４个民族，其中包括藏族①。在中国则只有藏族、俄亚纳西族③、门巴族和? Marriage and family is a traditional topic in cultural anthropology, which has long been valued by people. Among the various forms of marriage in the world, monogamous monogamy is the most common, followed by polygamy. Polygamous polygamy is less, in the sample survey of the world ethnography of Merck, there are only 4 ethnic groups, including the Tibetan ①. In China, there are only Tibetans, Yanas, and Mozambique.