Damp-heat in the liver and gallbladder (accumulation of damp-heat evil in the liver and gallbladder) may lead to sores in the mouth and tongue, but factors such as stomach fire and heart fire can also lead to sores in the mouth and tongue. Damp-heat in the liver and gallbladder refers to the accumulation of damp-heat (dampness and heat in the body that accumulate with each other) in the liver and gallbladder, resulting in a malfunction of excretion and drainage, and the patient often experiences symptoms such as bitter taste in the mouth, dystocia (pain in the area of the coxa and ribs), nausea and vomiting, jaundice, and so on. If dampness-heat vaporizes to the mouth or affects the stomach, sores on the mouth and tongue may occur. The tongue is the seedling orifice of the heart, and patients with strong heart fire may cause sores on the mouth and tongue, which may also be accompanied by irritability. Stomach fire, heat, may also lead to tongue sores, the patient will also have bad breath, constipation and other symptoms. Therefore, there are many causes of mouth and tongue sores, and it cannot be assumed that they are caused by dampness and heat in the liver and gallbladder (dampness and heat accumulated in the liver and gallbladder). Patients with severe mouth and tongue sores should go to the hospital to get a clear picture of the cause of the disease before treatment.