The Sutra of the Plain Woman is an important sexological work in ancient China. It was probably completed between the Warring States and the Han Dynasty, and was circulated and revised among the people during the Wei, Jin and Six Dynasties. The Sutra of Plain Woman is the most important sexological work in ancient China. Before the Tang Dynasty, many famous works about the art of sexual intercourse were circulated in China, such as Sutra of Plain Woman, Sutra of Mysterious Woman, Notes of Yufu, Notes of Yufu and Zi Xuan Cave, but they were all lost after the Five Dynasties and the Northern Song Dynasty. Fortunately, these works have already spread to Japan, so there are some ancient China house works in this country. In 982, Danbo Kanglai, Japan compiled 30 volumes of Medical Heart Prescription, of which the 28th volume extracted and quoted the above works in the room. Ye Dehui, a modern scholar, collated relevant quotations from Yi Xin Fang and other books. In the "Dark Series of Shuangmei Scenery" compiled by Income, Chinese people can get a glimpse of the style of the above works in the indoor part.