The normal appearance of mouth ulcers in babies vitamins may be due to the phenomenon of frequent mouth ulcers due to simple heredity, decreased autoimmune system and self-inflicted ulcers. 1. hereditary: baby always mouth ulcers may be his father, mother or grandfather, grandmother has a history of mouth ulcers, is a family aggregation. Can use such as watermelon cream and rehabilitation of new liquid gargle have a certain role in promoting the healing of ulcers. 2. autoimmune decline: the baby’s own immune system decline can also lead to mouth ulcers, may also be the body lack of trace elements, can be supplemented with trace elements of iron. You can also try to supplement vitamin B or vitamin C. 3. self-inflicted ulcers: baby’s mouth with residual roots, residual crowns, small milk teeth broken without repair may puncture the mucosa to form the child’s ulcers, at this time the need to solve the dental problem, it is recommended to take the baby to the oral hospital mucosa or pediatrics, usually should pay attention to cleanliness and hygiene in the oral cavity. Babies always have mouth ulcers should be timely consultation, according to the strict requirements of the doctor for treatment, at the same time should avoid spicy, greasy food, eat more fresh vegetables and fruits. The above drugs need to be used under the guidance of a doctor.