This paper analyzes the mythological meaning of Myth of Women Origin, which has been handed down to some natives in South America. Myth of Women Origin is broadly included in the category of Myth of Human Origin The myth of human origin is largely based on three questions: How did the first human beings come into being? , How was the human nature given to the first human being? and How did the first human be flourished to form the human race? Myth of Women Origin is more focused on the third question. Except for a few exceptional data, Myth of Women Origin is divided into two types depending on whether teeth are present or absent in Vagina. The former was called Type I and the latter was called Type II in this paper. The structure of spatial movement, which is common to both types, is explained by the change in the residence space of women. And this change shows that men s food, clothing and shelter is what women should do. The change in the physical attributes of the type Ⅰ of characteristics, ie, the removal of the teeth in the vagina of women, limits women s role to sex, childbirth, housework, etc., and produces a taboo in the marriage ceremony. In short, Myth of Women Origin describes not only the physical attributes that are given to human beings but also their socio-cultural origins in connection with them. However, these two characteristics of women lead the first men on the earth to the stage of human-animal to human . In this respect, Myth of Women Origin implies a mythical thought about the border between animals and humans.