There are two main reasons for frequent fire: First, the external environment, including wind, cold, heat, humidity, dryness, fire. Second, the body strain caused by, mostly seen in sexual life too often, mental stress and internal organs disorders. Work environment, living environment is too hot, usually diet like to eat hot chili, tropical fruits, etc., will lead to the human body on fire, sore throat, gum bleeding, mouth and tongue erosion, etc.. Weak self constitution usually produces internal heat, such as converting excessive mental stress into internal fire, which leads to further deficiency of the body, forming a thin body, dry throat and mouth, restlessness, irritability, etc. Symptoms of internal fire should be treated symptomatically with timely application of drugs and food.