There are many causes of oral palate ulcers, such as traumatic factors, recurrent oral ulcers, palate tumors and so on. 1. Traumatic ulcers: Eating too hard food, eating too hot food, etc. may cause trauma to the oral palate, thus leading to damage to the mucous membrane of the palate, thus inducing oral palate ulcers. 2. Recurrent oral ulcers: recurrent oral ulcers can also lead to oral palate ulcers, the cause of the disease has not yet been determined, may be related to endocrine changes, genetics, immune factors, etc., can be manifested as recurrent oral ulcers. 3. Palate tumor: oral palate ulcers may also be due to palate tumors, accompanied by ulcers surface detachment, necrosis, the edge of the crater showing a bulge. There are many reasons that lead to oral palate ulcers, if the phenomenon occurs for a long time, it is recommended to go to the hospital in a timely manner to improve the examination, a clear diagnosis, after diagnosis to give standardized treatment, do not ignore the symptoms and take it lightly.