Blistering of the child’s lips may be caused by burns, but also by diseases such as hand, foot and mouth disease and herpes of the mouth and lips. 1. Scalding: If your child has recently been scalded while eating, it can easily cause blistering of the lips, which is a normal phenomenon. 2. Hand, foot and mouth disease: this disease is mainly caused by enterovirus infection, which can be transmitted through respiratory droplets and close contact. In the early stage of the disease, children will have symptoms such as decreased appetite, low-grade fever, fatigue, etc., and scattered blisters will appear on the mucous membrane of the mouth and lips. 3. Oral and Lip Herpes: This disease is caused by herpes simplex virus infection, which is mainly transmitted through direct or indirect contact, and the virus is present in the oral and nasal secretions and blisters of infected people. It can be triggered by factors such as decreased immunity, gastrointestinal dysfunction, and trauma, resulting in blisters and pain at the corners and edges of the child’s mouth, as well as anorexia and fatigue. When the child’s lips blisters, if you exclude the normal situation, you need to go to the hospital in time to clarify the specific causes of the disease.