Colla Corii Asini is mainly used for treating blood deficiency, yellow face, insomnia and forgetfulness, and yin deficiency. Colla Corii Asini was first published in “Shennong’s Classic of the Materia Medica”, the taste is sweet and flat, entering the liver meridian and blood division (in the four periods of warm disease Wei Qi Ying Blood, belonging to the most in-depth stage or disease), can replenish the blood and nourish the yin, can be widely used in all the evidence of blood deficiency. If the treatment of qi and blood deficiency, yellow muscle thinness, limb weakness, lumbar and knee soreness and weakness (lumbar and knee soreness and weakness), insomnia and forgetfulness, etc., can be used with ripened rhizome, ginseng, the production of He Shouwu and so on. Colla Corii Asini has a moist texture and enters the lung meridian, which can moisturize the dryness of the lungs, lower the reversal of gasping, while stopping dry coughing and treating hemoptysis. If the treatment of dry lung yin, dry nose and throat, dry cough without phlegm, etc., with mulberry leaves, maitake, bitter almonds and other compatibility. The quality of this product is viscous, but also can be condensed and stop bleeding, can be used for various causes of bleeding. Because this product has the effect of tonifying blood and nourishing yin, it is especially suitable for those who have both blood deficiency and yin deficiency in bleeding. The adverse reactions and contraindications of Colla Corii Asini are not clear, and it should be used with caution for people with spleen deficiency and loose stool (thin and unformed feces). If medication is needed, it should be used under the guidance of a doctor, do not blindly self-medicate.