The efficacy of Ke Yin Pills is to clear heat and remove toxins (removing heat and toxins from the body), and to dispel wind and relieve itching (relieving itching by removing the wind that has invaded the surface of the muscle). Ke Yin Wan is composed of Poria cocos, Phellodendron amurense, Bei Dou Gen, and Fen Shen. It is used for psoriasis with red base of skin lesions, red base of tongue, constipation, yellow urine of blood-heat and wind-dry type. Note that Ke Yin Wan can cause adverse reactions such as liver damage and exfoliative dermatitis. There is a history of allergy to Ke Yin Pills, liver dysfunction is prohibited. Children, the elderly, pregnant and lactating women should use with caution. Pay attention to liver function monitoring during treatment. Ke Yin Pills should be used under the guidance of a professional doctor, do not blindly self-medication, so as not to cause adverse reactions.