Love long mouth ulcers may be a local irritant in the oral cavity or the organism has a systemic disease caused by the specific need to go to the hospital for examination. 1. Local irritants: frequent mouth ulcers may be the oral cavity is not removed local irritants caused by, such as sharp tooth tip or bad restorations, stumps, or long time like to eat hard food damage to the oral mucosa, the general tune grinding sharp teeth in the mouth to remove bad restorations, eat less stimulating food, the frequency of mouth ulcers can be slowly reduced. 2. Systemic diseases: frequent mouth ulcers may also be a hint of certain systemic diseases, such as esophagitis, gastric ulcers and other digestive system diseases may be related to the occurrence of mouth ulcers, in addition to leukemia will often appear mouth ulcers, manifested as oral, genital ulcers, ophthalmia and skin erythema lesions. Love long mouth ulcers specific need to go to the hospital to do a comprehensive systemic and oral examination in order to find the cause of the disease.