There are many reasons for tongue ulcers in the elderly, such as lack of vitamins, traumatic factors, oral diseases and so on. 1. Lack of vitamins: the lack of vitamins in the elderly body can cause the phenomenon of tongue ulcers in the elderly, especially the lack of vitamin B, or other trace elements, will lead to ulcers. 2. Traumatic factors: the elderly eating too hard food, or due to dental restorations and other factors, may lead to mechanical trauma of the tongue, thus leading to tongue ulcers in the elderly. 3. Oral diseases: such as aphthous ulcers may occur at the tongue. There are many causes of tongue ulcers in the elderly, if the phenomenon occurs for a long time, it is recommended to go to the hospital in time to improve the examination and give standardized treatment after a clear diagnosis.