Studies have found that mouth ulcers are very common, with 20% of adults and 5% to 10% of children experiencing recurrent mouth ulcers. In addition to dry weather, unsmooth tooth surfaces and ill-fitting dentures can cause ulcers to occur. In addition, compromised immune systems, key nutrient deficiencies such as vitamin B12 and iron, and viral infections are also contributing factors. Here are 10 tips that can effectively relieve mouth ulcers. 1. Stay away from spicy and oily foods and drinks that are too hot. Eat more fresh fruits and cool vegetables rich in vitamin C. 2. Avoid candy, chewing gum and soft drinks; 3. Eat less hard food and more soft food; 4. Eat more fresh yogurt, cheese and other dairy products; 5. Brush your teeth with a soft-bristled toothbrush; 6. Use alternating hot and cold water to rinse your mouth or apply cold ice to the ulcer site to relieve swelling; 7. Rinse your mouth with light salt water. This is done by adding 1 to 2 teaspoons of salt (or baking soda) to a cup of warm boiled water; gargle with light salt water in your mouth and rinse back and forth on both sides of your mouth, which can be repeated several times a day. In addition, usually develop a good habit of gargling after meals and brushing and rinsing before going to bed, also help prevent mouth ulcers; 8. Apply honey to mouth ulcer spots, or use honey and curry to make a paste and apply to ulcer spots. Honey not only helps to maintain humidity to prevent dehydration, but also helps to reduce the size of the wound and accelerate the generation of new tissue; 9, reduce stress through yoga, meditation meditation or exercise; 10, chew mint leaves, add some water appropriately, chew three or four times a day, can accelerate the healing of mouth ulcers.