Pediatric hiatal hernia, commonly known as inguinal hernia, is one of the most common diseases in pediatric surgery. The main manifestation is a smooth, elastic, reversible (sometimes absent) swelling in the inguinal region (the junction of thigh and abdomen), which appears when coughing or crying and disappears on its own after lying down and sleeping. It can be divided into testicular hernia (swelling that descends into the scrotum) and spermatic hernia (swelling that does not descend into the scrotum). Surgery is the best treatment for pediatric inguinal hernia. In clinical practice, there are more inquiries about the age of pediatric hiatal hernia treatment, and many elderly parents think that “it’s not a big deal” or “we’ll talk about it later”; including many clinicians of other specialties who often give such answers to the consultants. Such answers are too vague, what is the appropriate age? Currently, the age of surgery is recognized at home and abroad: generally, surgery can be performed at the age of 6 months or older. If it is too early, there is still a chance of self-healing, but the surgery requires high technical skills and has a high recurrence rate; if it is too late, it affects the groin development of the child and even the development of the testicles, and the longer the course of the disease, the more chances of incarceration. Currently, the age of children undergoing surgery in the clinic is between 1 and 3 years old. Another note: once the impaction occurs, that is, the mass does not disappear on its own, the child abdominal pain, vomiting, and even fever, abdominal distension, should immediately consult a specialist to reset, reset failure requires emergency surgery, otherwise intestinal necrosis may occur, and even infectious shock.