Colla Corii Asini has the effect of tonifying blood and nourishing yin, moistening dryness and stopping bleeding, and it is mainly used for treating diseases such as blood deficiency and atrophy. Colla Corii Asini is a kind of common Chinese herbal medicine, which is made from the skin of donkey after bleaching and dehairing, its flavor is sweet, its nature is flat, and it belongs to the lung, liver and kidney meridians. Colla Corii Asini has the effect of tonifying blood and nourishing yin, moistening dryness and stopping bleeding. Colla Corii Asini is mainly used in the treatment of blood deficiency and atrophy, dizziness and palpitations (rapid heartbeat, often accompanied by panic), muscle impotence, heartburn and insomnia, internal movement of deficiency wind, coughing, coughing and coughing with exertion, vomiting and urination of blood, blood in the stool and leakage of menstruation (menstruation with excessive or more than a few drops), and leakage of the fetus in pregnancy (small amount of bleeding from vagina in the early stage of pregnancy) and other diseases. Colla Corii Asini is a nourishing tonic and a sacred medicine for tonifying blood, and it is widely used by people, but it should be used with caution for people with weak spleen and stomach and loose stools (thin and unformed feces). If you need to use Colla Corii Asini, it is recommended that you consult a professional physician or pharmacist before use, and do not blindly use the drug on your own to avoid adverse reactions.