In traditional Chinese medicine, fire corresponds to heart fire, liver fire, lung fire, stomach fire, kidney fire, etc. Easily on fire may be physiological reasons, but also may be the cause of pathology, such as external evil. “Fire” is a common name, Chinese medicine refers to the imbalance of yin and yang in the human body, internal fire, can be divided into real fire and false fire, manifested as red, swelling, heat, pain, annoyance and so on. Real fire onset symptoms are more rapid, the onset of a short period of time, false fire is the opposite. ⒈ physiological reasons: if excessive consumption of fat, sweet, thick and greasy or spicy and stimulating food, the body is prone to stomach heat, heat will be transmitted to the heart, liver, lungs with the meridian, resulting in the three organs of heat is more exuberant, and ultimately the formation of fire evil. Long-term negative emotions, such as depression, anger, etc., easy to cause liver fire, liver fire will cause heart fire, long so will spread to the lungs, stomach. Paleopathological causes: mainly due to external evils, such as external wind-cold, wind-heat, summer-heat, etc. If the treatment is not timely or the treatment method is wrong, the evils will stay in the body, causing stomach fire and lung fire, and will also be transmitted to the heart and liver with the meridians, causing heart fire and liver fire. If any of the above causes occurs, after eliminating the physiological causes, one should go to the hospital in time and actively cooperate with TCM doctors to identify and treat the symptoms.