Frequent growth of mouth ulcers is related to the following factors: 1. Low immunity of the body, common in patients who are weak or have autoimmune diseases, patients who have tumors or receive radiotherapy have a large number of immune cells destroyed, which can be accompanied by the occurrence of mouth ulcers. 2. When suffering from stomach ulcers, duodenal ulcers, hepatitis, liver cirrhosis, biliary system diseases, it can lead to frequent episodes of mouth ulcers. Ulcers also occur when there is endocrine disharmony, endocrine system disorders, and lowered hormone levels, commonly in women before and after menopause or menstruation. 3. Failure to ensure adequate sleep, emotional instability, and nutritional deficiencies, such as insufficient intake of vitamin B and folic acid, can also lead to frequent attacks of mouth ulcers.