Mouth ulcers belong to the category of Chinese medicine “mouth sores”, solid fire type of mouth sores are characterized by redness, swelling, heat and pain, the onset of the disease is relatively acute. Mouth ulcers are caused by heat and toxicity in the body (too much fire in the body), mostly due to external heat, or eating too much spicy food, resulting in internal heat. Mouth sores solid fire type of symptoms are generally more acute, short course, and the ulcer surface is larger, obviously red, self-conscious burning, pain is more obvious. Even when talking or eating, the pain is unbearable, which will unconsciously reduce talking and eating. Mouth sores solid fire type may also be accompanied by sore throat, constipation, obvious bad breath, and even involve the ears, which are unbearably painful. For the mouth sores solid fire type, you can take Chinese medicines such as Huanglian Xieyue Tablet, Huanglian Shangqing Pill, Qingtu Huanglian Pill, Dandelion Granules, Jin Yinhua Granules, etc. to clear heat and detoxify the toxin (remove heat and poisonous evils from the body), and to clear heat and diarrhea (remove heat and fire evils from the body) to treat the problem. If you find ulcers in the mouth and the pain is unbearable, you should consult a doctor in time, follow the doctor’s instructions for examination and treatment, and do not use medicines without authorization, so as not to damage the body with the wrong medicine.