The common traumatic factors of oral traumatic ulcers include residual tooth roots, sharp edges of crowns, unsuitable dentures, bite wounds, eating too hot, too hard food, chemical burns and so on. Since some patients have more serious tooth wear, thin edge tax, especially the elderly patients have more possibility to wear dentures, and their oral mucosa epithelium becomes thinner with age, so they are more likely to suffer from oral traumatic ulcers. The treatment of oral traumatic ulcers must immediately remove the local traumatic factors, such as the extraction of no retention value of the residual roots, residual crowns, grinding the edge of the crown of taxation, modification or re-denture. Then use anti-inflammatory and pain-relieving drugs to coat the ulcer surface, such as Yahaodin boron cream, etc. Individual weak elderly people can consider taking vitamins orally. Note that if only medication is used without eliminating the traumatic factors, the ulcer will not heal easily or even recur. Although oral traumatic ulcer is a benign lesion, it should be paid great attention to. This is because the metabolism of oral mucosa tissue is very vigorous, cell renewal is fast, repeated bad stimulation makes ulcers do not heal for a long time, easy to make tissue cell mutation, and eventually form cancer. If the ulcer is hardened at the base and protrudes outward, it indicates that the benign ulcer may have turned into a malignant lesion. The elderly should be more alert to oral traumatic ulcers because of the thinning of the oral mucosa and the weakened repair ability, as well as the increased chance of genetic mutations.