The Sutra of Plain Woman is actually the most famous ancient sexology work in China, which comprehensively discusses the art of keeping in good health in the bedroom, and is also an ancient book of premarital sex education in China.

The Sutra of the Plain Woman not only teaches sexual skills, but also teaches men and women how to know and use their bodies, how to keep fit with Yin and Yang, how to treat diseases, how to seek children, and how to give birth to offspring with sufficient congenital endowment.

The Sutra of Plain Woman emphasizes that sexual intercourse and human physical strength are mutually influenced. "The reason why mortals have fallen is that they have been hurt by Doyle, who is in the transformation of Yin and Yang." Put forward the preliminary principle of eugenics, emphasizing that "love" is the purpose of sexual intercourse, but also to give birth to a "virtuous and longevity" child. First of all, it puts forward the "nine disasters", that is, it is not suitable for sexual intercourse in nine situations, and also puts forward how to get pregnant easily.

The Sutra of the Plain Woman contains many simple and valuable viewpoints of sexual theory, which is a summary of China's sexual theory before Han and Tang Dynasties. In the works, health preservation, qigong and sexual intercourse are closely combined, from which we can see that the ancients paid great attention to inhaling, nourishing and abstinence in sexual life, which has many scientific reasons. However, the argument that sexual intercourse should be strictly confidential is not consistent with the argument of modern science.