Frequent mouth ulcers, i.e. recurrent mouth ulcers, are also clinically known as recurrent mouth sores, recurrent aphthous ulcers, etc. The etiology of recurrent mouth ulcers is complex, and the etiology may include the following aspects: 1. immune function abnormalities: patients may mostly have their own immune function disorders; 2. genetic factors: many patients will have a family history of mouth ulcers; 3. mental factors: when patients are more stressed and mentally anxious, they are prone to recurring mouth ulcers when they are too nervous; 4. malnutrition or The lack of micronutrients may also occur mouth ulcers. The cause of mouth ulcers is not very clear, it may be a combination of factors that lead to the onset of mouth ulcers, and there is no special method to cure it. The main manifestation of mouth ulcers is recurrent mouth ulcers, which are usually self-limiting and can heal without medication, and usually will not turn into cancer.