Patients with mouth ulcers should not drink alcohol or smoke. Patients with mouth ulcers should not eat spicy and irritating food to avoid irritating the wound and making the pain worse, which is not conducive to the healing of the wound, in addition to not eating food with a particularly high temperature, and try not to eat food that is particularly hard or not easy to chew to avoid friction on the ulcer and increase the pain. Patients with mouth ulcers also try not to eat foods that can easily catch fire, such as lychees, oranges, etc. Mouth ulcers also can not stay up late, should be regular work and rest time, proper rest. You should eat a balanced diet and eat more fresh fruits and vegetables to replenish sufficient vitamins. Patients suffering from mouth ulcers do not have to worry too much, even without treatment, the ulcers will heal themselves in about 7-10 days.