Mouth ulcers clinically generally for oral ulcers, there are peri-adenoidal mouth ulcers and stomatitis-type mouth ulcers, mainly symptomatic treatment, removal of the causative agent supplemented by drug therapy. 1. Remove causative factors. The cause of ulcers is unknown, generally need to remove the local stimuli, such as intraoral poor restorations, eat less hard objects, maintain psychological pleasure, avoid overwork and so on. 2. Drug treatment. Local or systemic use of drugs (tretinoin, lidocaine gel, glucocorticoids, thalidomide tablets, etc.) to promote the healing of ulcers as soon as possible, the drugs should be used in accordance with medical advice. Mouth sores need to find the possible causes of the disease, under the guidance of a physician to use medication, daily recommended nutritional balance, maintain good physical condition to prevent the emergence of ulcers.