Chinese medicine does not have the concept of fire, the so-called tongue fire refers to the appearance of tongue ulcers, the main symptoms are ulcers, pain. The specific symptoms of tongue ulcers can vary from one cause to another. 1. Heart fire: tongue ulcers are characterized by burning pain at the tip of the tongue. It is advisable to clear the heart and lower the fire, cool the blood and diuretic. The prescription is to use the guide red powder, diarrhea heart soup and so on. Caution should be exercised if the spleen and stomach are weak. For those with Yang deficiency and blood loss, and those whose spleen cannot regulate blood, avoid using Laxing Xin Tang. 2. Spleen and Stomach Fire (fire invading the spleen and stomach): ulcers are mainly found in the middle of the tongue, and there are also many ulcers in the cheeks of the mouth and the inner side of the lips, accompanied by bad breath and bitterness in the mouth. It is advisable to clear away heat and fire (to remove heat and fire from the body), and laxative, and can be treated with medicines such as Qinggongsan. Toothache belongs to wind-cold and kidney deficiency and inflammation should not be used to clear the stomach. 3. Liver meridian heat depressant: Most common in women, mouth sores are located on the edge of the tongue, and can be aggravated by emotional fluctuations. It is suitable to clear liver and diarrhea fire (clear liver fire), regulate qi and cool blood, can apply dan gardenia free pill and so on for treatment. Allergic to this product prohibited, pregnant women use with caution. 4. yin deficiency fire (body yin essence loss, appear deficiency fire hyperactivity): Ulcer color bright red not healed for a long time, recurrence, pain day light and night heavy. It is advisable to nourish yin and clear away heat (nourish yin essence and clear away heat), and can be treated with Zhi Bai Di Huang Wan. The adverse reactions and contraindications of this product are not clear. If there is any abnormality in the tongue, it is recommended to consult the hospital and standardize the treatment under the guidance of physician.