Ancient China had a diverse and multi-ethnic sexual culture, sexual concepts, sexual morality, and sexual principles, but it did not mean that these concepts and ideas were correct or generally applicable to modern society. In fact, these ideas are widely questioned and criticized in modern society because they are considered immoral, uncivilized and unhealthy. Ancient Chinese sexual culture, sexual concepts, sexual morality, and sexual principles involved many aspects, such as relationships between men and women, sexual behavior, reproductive concepts, family concepts, and so on. These concepts and ideas had different manifestations in different eras and regions, and were often influenced by religious, cultural, moral and other factors. Modern society emphasized individual freedom, equality, and respect. These concepts and ideas often contradicted the values of modern society in these aspects. Therefore, we need to examine and explore the sexual culture, sexual concept, sexual morality and sexual theory in ancient China with an open mind, but we also need to recognize their limitations and defects in the past and modern society.