Glycyrrhizin has the effect of protecting liver and lowering enzymes, mainly applied to treat chronic liver disease and improve abnormal liver function, and can be used to treat eczema, dermatitis, baldness and other diseases. Glycyrrhizin 2-3 capsules once for adults and 1 capsule once for children, 3 times a day, taken orally after meals. Adverse reactions mainly include increased blood pressure, decreased urine output, swelling, and the occurrence of muscle pain and cramps in the extremities. It should be contraindicated in patients with aldosterone symptoms, myopathy, and hypokalemia. It should be used with caution in patients of advanced age, patients with allergy to heparanoside, and pregnant and lactating women after weighing the pros and cons.