The frequency of taking Colla Corii Asini is related to its purpose. If it is only for health care, it can be taken orally once a month, especially for post-menstrual women, for 3-5 days; if it is used for treating diseases, it can be taken according to medical advice. Colla Corii Asini has the function of nourishing blood and nourishing yin, moistening dryness and stopping bleeding, mainly used for blood deficiency and yellowing, dizziness and palpitation, heart trouble and sleeplessness, dry lung and cough. Colla Corii Asini is a good blood tonic and can be used for iron deficiency anemia, megaloblastic anemia and aplastic anemia, which are to be treated with western medicine, with Colla Corii Asini as an aid. For some female patients, suffering from blood loss due to menstruation, taking Colla Corii Asini can play a good role in blood tonic. Women can take it properly after menstruation to replenish the blood lost by the body due to menstruation. In addition, Colla Corii Asini can be used alone or in combination with other herbs, such as Angelica Sinensis, Radix Paeoniae Alba, Radix Rehmanniae Praeparata and Radix Phellodendron Bidentatae to better utilize its medicinal effects.