The medicines used for internal heat of yin deficiency include mudanpi, chasteberry, tortoise shell, etc. However, the efficacy of individual application is limited, therefore, it is difficult to achieve the therapeutic effect of internal heat of yin deficiency by using only one medicine, and it is necessary to choose the medicine according to the specific situation. 1. Peony dandan skin is bitter, pungent and slightly cold. It belongs to heart, liver and kidney meridians. It has the effect of activating blood circulation and removing blood stasis, clearing heat and cooling blood. It can be used in treating fever due to yin deficiency, injury of yin by warm evil, no sweating and bone vaporization, night fever and early cooling; heat entering the camp and blood (the degree of invasion of heat into the human body is deep and the symptoms are more serious), epistaxis due to blood-heat (vomiting of blood and nosebleed due to blood-heat), spots due to temperature-heat toxicity (spots and plaques appearing on the skin as a result of warm-heat toxicity invasion of the human body); carbuncle, swelling and sores. This product should be used with caution in pregnant women, and should not be used in people with excessive menstruation, blood deficiency and cold, and the adverse effects are not clear. 2. Chasteberry is sweet, bitter and cool. It belongs to liver and kidney meridian. It has the effect of brightening the eyes and darkening the hair, nourishing the liver and kidneys, and can be used for Yin deficiency of the liver and kidneys, soreness and weakness of the waist and knees, dizziness and tinnitus, bone vapor and tidal fever. It is suitable to be used together with Radix Rehmanniae Praeparata, Rhizoma Coptidis, Rhizoma Aspergillus, and Rhizoma Aspergillus. It can be used for the treatment of yin deficiency with heat, pain in the eyeballs, and slight redness and shyness of eyes. The adverse effects of this product is not clear, Yang deficiency and cold spleen and stomach diarrhea should be used with caution. 3. The medicinal properties of tortoise shell are salty, sweet and slightly cold. It belongs to liver, kidney and heart meridians. Beneficial to the kidneys and bones, nourishing yin and submerging yang, fixing menstruation and stopping disintegration, etc. It can be used for yin deficiency and tidal fever, bone vapor and night sweating, dizziness and dizziness; yin deficiency and blood heat. It is often used in combination with Radix Rehmanniae Praeparata, Rhizoma Cyperi, Rhizoma Polygonati, etc., to treat yin deficiency with internal heat, night sweating and spermatorrhea, and bone vaporization and tidal fever. Adverse reactions are not clear, pregnant women should be cautious, people with cold spleen and stomach should not take. If you are not feeling well, please consult a doctor in time.