Ice compress can relieve oral ulcers. Oral ulcer is a common oral mucosal disease, the most common one in clinic is aphthous oral ulcer, and its etiology is not very clear at present, but there are many factors that can lead to oral ulcer, such as the infection of microorganisms such as bacteria and viruses. Malnutrition and vitamin deficiency; The influence of digestive system diseases such as gastrointestinal ulcer inflammation, constipation and diarrhea; Lack of trace elements, such as iron deficiency, folic acid, selenium, B 12 and zinc; Endocrine disorder; Mental and neurological factors, such as overwork, nervous fluctuation, neurological disorder, etc. Traditional Chinese medicine calls oral ulcer "aphtha", which is mainly divided into two aspects: excess syndrome and deficiency syndrome: (1) excess syndrome is more common in young or physically strong people, mainly manifested as obvious congestion and redness of ulcer, burning pain; (2) Deficiency syndrome is more common in elderly or weak people, mainly manifested as grayish yellow ulcer, dull pain and long course of disease. Clinically, according to the symptoms of patients, syndrome differentiation and classification: exogenous pathogenic factors are toxic, and treatment is given to clear away heat and toxic materials, strengthen the spleen and eliminate dampness; Spleen and kidney yang deficiency type, treated by warming and tonifying spleen and kidney, causing fire to return to yuan; Spleen and stomach weakness type, treated with invigorating qi and tonifying middle energizer, invigorating spleen and eliminating dampness; Yin deficiency of heart and kidney, nourishing yin and clearing fire, nourishing heart and calming nerves; Blood deficiency and yin deficiency, nourishing yin and clearing fire, nourishing the heart and calming the nerves. At the same time, combined with oral administration and traditional Chinese medicine coating, the clinical effect is often better. In addition to active treatment, patients with recurrent oral ulcers should pay attention to the following points at ordinary times: 1, be optimistic and cheerful, feel comfortable, avoid anxiety, get enough sleep, improve sleep quality and avoid staying up late. 2. Drink plenty of water: it is necessary to ensure sufficient water in the body, and it is also the basic method to prevent internal fire from "spontaneous". Adequate water can accelerate metabolism, enhance physical fitness, reduce blood viscosity, relieve fever and soothe the nerves, enhance skin elasticity, delay aging, beautify and protect health, and enhance the body's disease resistance. 3, strengthen physical exercise, improve the body's ability to resist diseases. 4, avoid overeating spicy, fat, sweet, greasy and other stimulating products, so as not to hurt the spleen and stomach. Prevent the trauma of rough and hard food (puffed and fried food) and overheated food to mucosa. Balanced nutrition, light diet, eat less barbecue, pickled, spicy food, eat more vegetables and fruits and other foods rich in vitamins, and maintain regular eating habits. 5. Pay attention to daily life rules and nutritional balance to avoid overwork. Develop certain defecation habits to prevent constipation. 6. Remove local irritation factors in the oral cavity, avoid oral mucosa damage, and maintain oral hygiene. 7. If you have rhinitis, nasopharyngitis and sinusitis, you should treat them in time, otherwise it will easily aggravate or cause oral ulcers.