The method of taking Chinese medicine internally or externally to prevent women from becoming pregnant temporarily is called Chinese medicine contraception. It is a scientific research topic of family planning. There are records in ancient Chinese medicine books such as "infertility due to cold in the uterus", suggesting that cold-cooling drugs may inhibit fertility. Therefore, the traditional Chinese medicines selected for study are mostly bitter-cold and cold-cooling products, such as raw mung beans, lithospermum, Phellodendron cypress, Kuding tea, purple eggplant flower, etc. , tadpoles, Linglingxiang, Canzibu, etc. Clinical observation shows that compound trichosanthin and gossypol are the most effective, but attention should be paid to side effects when using them.