Colla Corii Asini has the effect of tonifying blood and stopping bleeding, if the body has a deficiency of qi and blood, etc., taking Colla Corii Asini can have an effect on menstruation. Colla Corii Asini is a solid gum made from the dried or fresh skin of donkeys of the family Equidae by decoction and concentration. The drug is sweet and flat in nature, belonging to the lung, liver and kidney meridians, with the effect of tonifying blood and nourishing yin, moistening dryness and stopping bleeding. It can be used in the treatment of blood deficiency, dizziness and palpitation (rapid heartbeat, often accompanied by panic), muscle impotence, insomnia, internal movement of deficiency wind, lung dryness and cough, coughing and hemoptysis due to labor, vomiting and urination of blood, blood in the stool and leakage of blood (excessive menstruation or dripping), and fetal leakage of pregnancy (a small amount of vaginal bleeding in the early stage of pregnancy), and other conditions. When using it, it should be noted that during the period of taking it, avoid eating spicy, stimulating and greasy food. As Colla Corii Asini has the effect of tonifying blood and stopping bleeding, it is effective in treating disintegration caused by deficiency of qi and blood. Before using Colla Corii Asini, it is recommended to go to a regular hospital and use it under the guidance of a professional doctor.