Ulcers are ulcers that occur in the oral mucosa, most common in the buccal mucosa, lip side and tongue surface, ulcers have the characteristics of recurrence and periodicity, there is a certain degree of self-limitation, according to the etiology of the ulcers to promote their improvement as soon as possible can be divided into the following methods: 1, if it is due to the lack of vitamin C, you can use vitamin C effervescent tablets to soak up the water to drink, and eat more fruits and vegetables, due to the ulcers will be accompanied by severe pain, it is best to eat warm and cool liquid, semi-liquid diet. Eat a warm and cool liquid, semi-liquid diet, avoid spicy; 2, if it is due to the lack of attention to oral hygiene led to bacterial growth in the mouth, you need to brush your teeth in the morning and evening, don’t eat before going to bed, if there is pus on the surface of the ulcers or the ulcers are not healed for a long time, you can use compound chlorhexidine gargle rinsing solution, anti-inflammatory, analgesic effect, you can also use the watermelon cream spray on the surface of the ulcers, spray 1-2 times each time, 3 times a day, or you can also use the Ulcer paste treatment.