There is no such thing as what comfrey is best for, it is usually symptomatic based on the condition. Comfrey can be used to treat blood-heat toxicity, measles impermeable, burns, sores and other diseases. But specific should be used according to the physician’s diagnosis and treatment, not blindly use their own medicine. Comfrey belongs to the comfrey family plant Xinjiang comfrey or Inner Mongolia comfrey dry root. It is sweet, salty, cold in nature, belongs to the heart, liver meridian, has the efficacy of clearing heat and cooling the blood (to relieve blood heat by clearing heat), penetrating rashes and eliminating spots, and activating blood circulation and detoxification, and it can be used for treating blood-heat and poisonousness, impenetrable measles, purple and black spots, sores, water and fire scalded, and eczema and other diseases. It should be noted that the adverse reactions and contraindications of the drug are not clear, but due to its cold nature, it should be taken with caution for people with weak stomach and intestines and slippery stools. When used, it can be decocted and taken internally, or boiled or soaked in vegetable oil and rubbed externally, but attention should be paid to the appropriate amount, under the guidance of a physician to identify the use of evidence.