Abstract: In the novels of the Ming and Qing dynasties, the motif of unexpected curative properties of snake venom can promote relationship between husband and wife, motherinlaw and daughterinlaw, or lead to marriage. In the diachronic development of motif, individual text which is simply narrative becomes richer and richer in folklore connotation. Various copies of the same text affect their readers interactively. These stories from Buddhist Sutras, influencing each other and interacting with each other, become mature by adding new details. These stories become more credible when they are connected with customs in particular areas.

Key words: ethicorientation, novels in Ming and Qing dynasties, stories from Buddhist Sutras, comparison of China and India, Key words： motif of unexpected curative properties of snake venom