If a young child has blisters inside the mouth, do not take it lightly, you need to take your child to the pediatrician and stomatologist as soon as possible. The following are some of the more common cases of blisters inside the mouth of young children: 1. The oral herpes formed by herpes simplex virus infection, which is a viral infection disease, requiring antiviral treatment. For the mouth inside the blistered parts, you can apply mouthwash and open throat sword spray for treatment; 2, the mouth inside the symptoms of hand, foot and mouth disease, this time in addition to the oral disease inside the local treatment, but also systemic support treatment. Anti-inflammatory, antiviral and systemic nutritional support treatment; 3, in addition, the infant mouth blisters may also be the emergence of blood blisters, such as eating hard food, irritation to the mucosa caused by this time is not a big problem, about 2-3 days will automatically absorb, do not need to deal with.