Abstract
Sexual behavior and sex-based love are the earliest metaphysical experiences of mankind, and they have played an important role in the human subject construction. First, sexual evolution and sexual selection have participated in the construction of human biological development, enabling human beings to be born and continued as an independent natural species. Secondly, sex and love participate in the construction and development of the human psychological world and are one of the deep sources of human consciousness. Finally, sex and love are important construction and driving factors for the development of human society since the matriarchal clan society. It is not only the basic unit of human society-the fundamental support of the family, but also the basic principle of the operation of the entire social rights and economic mechanism.