Levirate marriage has been practiced by societies with a strong clan structure in which exogamous marriage outside the clan was forbidden.

• 因此，“骨血不倒流”的说法是反对姑家的女儿嫁给舅家的儿子的。汉、满族都有此忌讳。南方还有“骨肉还乡，家败人亡”的俗语流传。云南一些壮族城区也有此禁忌。