Fresh dandelion can be brewed to drink, but the dandelion should be cleaned before brewing, so as not to eat and drink unclean and cause gastrointestinal discomfort. Dandelion is bitter, sweet and cold in nature; it belongs to the liver and stomach meridians. It has the effect of clearing away heat and detoxification (removing heat and toxicity from the body), subduing swellings and dispersing lumps, and inducing diuresis and drenching. It is mainly used in the treatment of carbuncle furuncle (a skin disease, referring to severe furuncle), breast carbuncle, heat drenching (burning and stinging pain during urination, accompanied by urinary frequency and urgency, and abdominal traction and discomfort), astringent pain, and dampness-heat jaundice. Dandelion overdose can lead to slow diarrhea. The effective dose of dandelion in water is limited, generally can not achieve a therapeutic effect, if you want to achieve the desired results, it is recommended to carry out regular treatment under the guidance of a doctor. If there is any discomfort after drinking dandelion water, it is recommended to stop using it and seek medical advice promptly.