The incidence of inguinal hernia in children is about 5% and can be as high as 11–25% in premature infants. The incidence is usually 3–10 times higher in boys than in girls. Because of the serious harm that can be caused by an incarcerated hernia in early childhood, it is very important to clearly diagnose pediatric hernia at an early stage and provide timely treatment. The following is a brief description of the typical clinical manifestations of pediatric hernia. A typical inguinal hernia presents as a reducible mass in the groin, scrotum or labia. It usually appears when the child is playing or crying, and the mass may disappear on its own during quiet or sleep. In some cases, the first detection may be an acute attack (hernia contents become entrapped), which is characterized by a mass in the inguinal region or scrotum and by crying and vomiting. Parents must take their children to the hospital in time to avoid delaying the condition of the child, which may lead to serious adverse consequences.