Guanzhong is the name of a Chinese medicine that has the effects of clearing heat and removing toxins (removing heat, toxins and evil qi from the body), astringing the intestines and stopping diarrhea (relieving diarrhea by enhancing the intestinal astringency), and cooling and stopping hemorrhage (cooling and moistening the blood and preventing hemorrhage). The drug source of Chinese medicine Guanzhong is the root or root of the whole herb of the bright-leafed comanita of the Rosaceae family, with an astringent and bitter taste, which belongs to the stomach, large intestine and liver meridians, and has the efficacy of clearing away heat and removing toxins, astringing the intestines to stop diarrhea, and cooling and moistening blood to stop hemorrhage. It can be used to treat abdominal pain due to food accumulation (food that is indigested and stops accumulating in the stomach), cool the blood to treat it, stomach pain, bleeding from trauma, boils (sores mostly occurring on the limbs or face, with small shapes and deep roots, as hard as nails), dysentery, hemoptysis, hemorrhoidal bleeding, metrorrhagia (menstrual bleeding that is too heavy or dripping), dysmenorrhea and other conditions. It should be noted that Guan Zhong is contraindicated for those with deficiency of the spleen and stomach (weak and cold spleen and stomach), and generally has no specific side effects and no clear contraindications. It can be used internally by decoction or infusion in wine, and externally by powdering or pounding. The specific use of the drug should consult a physician and follow medical advice, and should not be used blindly to avoid adverse effects.