Tonifying yin in traditional Chinese medicine is also called nourishing yin, nourishing yin, nourishing yin and benefiting yin. It can nourish yin fluid, promote fluid production and moisten dryness, especially beneficial to liver and kidney. Comprises adenophora adenophora, Ophiopogon japonicus, asparagus, Dendrobium candidum, Polygonatum odoratum, lily, medlar, mulberry, Eclipta prostrata, Ligustrum lucidum, tortoise plastron, turtle shell, black sesame and the like.