Mouth ulcers should be localized with some sprays, such as Golden Throat Ken spray, stomatitis spray, etc. You can also apply some mouthwash, such as tinidazole solution, chlorhexidine solution, rehabilitation new solution, etc. Once there is no stimulation in the mouth, the ulcer will usually heal completely in seven to ten days. Oral mucosal ulcers are the most common diseases of the oral mucosa, generally occurring on the tongue, cheek, gums and other locations of the oral mucosa. Oral ulcers are generally divided into traumatic ulcers and recurrent ulcers. For traumatic ulcers, the main thing is to remove the irritant causing the ulcer and then apply topical medication, which usually heals quickly. For recurrent ulcers, the cause is not very clear, so specific treatment is needed to find out the cause. Generally, ulcers are self-limiting, as long as you maintain good oral hygiene, remove local irritants, and do not eat irritating things, the ulcer will heal on its own in seven to ten days. If the ulcer does not heal for more than a month, you need to go to the hospital for pathological examination to see if there are other lesions.