Colla Corii Asini is suitable for people with blood deficiency, yin deficiency, hemoptysis, blood in stool, and fetal leakage in pregnancy (small amount of vaginal bleeding in early pregnancy). Colla Corii Asini has the effects of tonifying blood, nourishing yin and moistening dryness. Colla Corii Asini is flat in nature, sweet in taste, and belongs to the lung, liver and kidney meridians. Its basic function is to tonify blood, nourish yin, moisten dryness and stop bleeding. It is suitable for blood deficiency, yellowish color, muscle impotence, palpitation, dizziness, insomnia, false wind, cough and asthma, hemoptysis, hematemesis, hematochezia, hematemesis, hematochezia, hematochezia, and fetal leakage in pregnancy. The adverse reactions and contraindications of Colla Corii Asini are not clear, and should be used with caution in cases of spleen deficiency with loose stools. If you need to use the medicine, you should consult your doctor first, and use it under the doctor’s guidance, do not blindly self-medication.