Impetigo is a common superficial skin infection that is easily transmitted by contact, commonly known as “yellow sores”, and mainly affects children, with Staphylococcus aureus as the main causative agent. The disease is easily transmitted by contact and can spread rapidly among children through direct human-to-human contact. The peak incidence of the disease is in the summer and fall, and adults may also get the disease from close contact with sick children. Children with high temperatures and humidity, poor hygiene, allergic skin, skin trauma, and contamination of the nose, armpits, pharynx, and perineum with Staphylococcus aureus colonization are susceptible. Early in the course of the disease, children develop small erythematous patches around the nose, mouth, and other areas, which quickly develop into small blisters or pustules, then rupture, yellow water, and honey-yellow scabs. The area rapidly expands from the infected area to the surrounding skin, and some may form loose, transparent blisters or pustules, and fever may develop in severe cases. If you notice any of these symptoms in children, especially if multiple children develop the disease rapidly, it is important to come to the hospital dermatology department promptly. Most children with impetigo can recover quickly and without scarring after prompt diagnosis and treatment with topical lotion and antibiotic ointment. Only a very small number of very sick children may have systemic effects or cause scarring if not treated promptly. Therefore, parents should pay attention to the changes in their children’s skin to prevent and control summer impetigo.