Mouth ulcers without medication, depending on the type of ulcer, the healing time is variable and commonly usually heals in 1 to 2 weeks. Oral ulcers are mainly categorized into recurrent Aphthous ulcers, cancerous ulcers, traumatic ulcers and so on. For recurrent Aphthous ulcers, without medication, light ulcers usually heal spontaneously in 7~10 days; heavy ulcers usually heal spontaneously in 1~2 months. For cancerous ulcers, surgical treatment is required, medication is not effective, and there is no relationship between healing time and the use of medication. For traumatic ulcers, usually caused by bad restorations, residual roots and crowns and other stimuli, need to remove the corresponding stimulating factors and then with medication in order to heal, usually about 1~2 weeks; no medication, purely to remove the stimulating factors, the healing is relatively slower. It is recommended to go to the stomatology department of the regular hospital, and be examined by a physician to make a clear diagnosis according to the condition, and treat the cause of the problem.