Mouth ulcers, also known as mouth sores, are common in clinical practice and are usually painful, with significant localized burning pain, and in severe cases, they can affect eating and speaking. For people with recurring mouth ulcers, the first thing that should be done is pain relief treatment, in addition to that, the cause of the mouth ulcer attack should be considered. I. Symptomatic treatment: For people with frequent recurrent mouth ulcers, the first thing to do during an attack is to use painkillers such as lidocaine gel or spray for pain relief. If there is inflammation, you can use anti-inflammatory drugs such as compound chlorhexidine gargle, or oral tablets for anti-inflammatory treatment. You can also apply watermelon cream and other drugs to promote healing. Second, the cause of treatment: 1, trauma: due to improper teeth, constantly wear the oral mucosa or eating accidentally bite the mucosa, poor wound healing will lead to oral ulcers. Eating too hard and sharp food should be avoided. Be gentle when brushing your teeth to prevent damage to the mucosa. You can also go to the hospital in time to be judged by the doctor whether to carry out orthodontic treatment; 2. Spirit: high work pressure, mental tension, excessive anxiety, etc., may cause recurrent mouth ulcers. It is recommended that patients keep a happy mood, can be appropriate to divert attention and listen to more soothing music to help relieve symptoms; 3, immune function: patients with low immunity are susceptible to pathogens, while immune proteins are consumed, breaking the oral immune balance, which can lead to mouth ulcers, can use immunosuppressants such as thalidomide and other drugs to increase cellular immune function; 4, nutritional deficiencies: gastrointestinal disorders or paranoia The lack of nutrients can lead to insufficient intake of vitamin B and iron, zinc, folic acid and other nutrients in the body, which can lead to recurring mouth ulcers, and can be applied under the advice of doctors to acid suppressants and drugs that protect the gastric mucosa, such as omeprazole, aluminum thioglycollate, etc., and actively treat gastrointestinal diseases. People who are partial to eating try to change their bad habits, usually eat more fruits and vegetables, or under the guidance of doctors through drug therapy to supplement the lack of nutrients in the body.