It is generally believed that the efficacy of dandelion leaves is the same as that of dandelion root, because the traditional Chinese medicine dandelion is to take the dried whole grass of the dandelion plant, i.e., the whole plant with the root, which has the efficacy of clearing away heat and detoxifying the toxins (clearing away heat and poisonous evils in the body), inducing dampness to clear the flow of water and reducing swellings and dispersing knots. Dandelion is bitter, sweet, cold in nature, belonging to the liver, stomach meridian, can be used for carbuncle furuncle (mostly occurs in the limbs or face of the sores, the shape of the small root base of the deep, such as nails like hard), breast carbuncle pain, carbuncle spitting pus scrofula (mainly refers to the cervical lymph node nodule tuberculosis), venomous snake bites, jaundice with dampness-heat, heat drenching (urination with burning hot tingling, accompanied by urinary frequency, urgency, discomfort in the small abdominal traction), astringent pain and other diseases. Dandelion is taken as a decoction, externally fresh, pounded compresses, or decoction and fumigation of the affected area. It is worth noting that too much dandelion can lead to slow diarrhea. The adverse reactions and contraindications of dandelion are not clear, it is recommended to use the drug under the guidance of a doctor, not self-medication.