Xuan Shen has the benefits of clearing heat and cooling blood (relieving blood heat by clearing heat), nourishing yin and reducing fire (nourishing yin essence and lowering fire), and detoxifying and dispersing knots in women, with specific medication as prescribed by the doctor. Xuan Shen, sweet, bitter, salty, slightly cold in nature, belongs to the lung, stomach and kidney meridians. Clinically, it is mostly used in treating heat in the camp blood, warm poisonous spots (spots and plaques appearing on the skin due to the invasion of warm-heat poisonous evils), heat disease and injury to yin, tongue with reddish-red color and thirst, constipation due to injury of fluids, bone vapor and laborious coughing, redness of the eyes, sore throat, diphtheria, scrofula (mainly refers to tuberculosis of lymph nodes of the neck), carbuncle, swelling, sores, etc. Xuan Shen should not be used together with quatuor. Xuan Shen should not be used together with Veratrum. The specific medication of Xuan Shen should be carried out under the guidance of specialists, and should not be used without authorization.