Many parents tend to think that pediatric hernia is not a serious disease, so there is no harm in not having surgery, but rather anesthesia can seriously affect the intelligence of the child, and because of this, some children end up having their intestinal tubes, even ovaries or testicles, necrotic after being stuck and removed, and the parents are remorseful. In fact, pediatric hernia is one of the common diseases in pediatric surgery, commonly known as “small hernia”, “small intestinal gas”, “gas egg”, “big egg”, etc. The pathogenesis is different from that of “small hernia”. “The pathogenesis is different from that of adults, because during embryonic development, a sac-like protrusion called “sphincter” is created by the peritoneum in the groin. It generally gradually atrophies and occludes around the time of birth. During this period, if the child cries a lot, coughs, has constipation and difficulty in defecation, or has tumors or ascites in the abdominal cavity, the abdominal pressure increases, and the organs in the abdominal cavity, such as intestines, appendix, ovaries and fallopian tubes of girls, burrow into this sac, which is called “hiatal hernia” in medical science. “This sac is called “hernia sac”. This is the most common type of hernia in children. If the abdominal organ enters the hernia sac and stays for a long time without resetting itself, causing impaired blood circulation to the herniated contents, it is called an “incarcerated hernia”. If the incarceration is prolonged or repeated, it can cause harm to the body, such as ischemic necrosis of the herniated organ. In boys, if the spermatic cord is overly compressed, the testicles may become necrotic; in girls, the fallopian tubes may become adherent and blocked, and the ovaries may become ischemic and necrotic, causing serious damage to the child. Wouldn’t that be a “small failure to treat and a big disaster”? Even if there is no impaction, the long-term compression of the spermatic cord by the contents of the hernia will cause obstruction of blood return to the testes and decrease the blood supply, thus causing varicose veins in the spermatic cord, testicular stasis, hypoxia, and eventually atrophy. Moreover, as children grow older and become more active, the falling intestinal canal strains the mesentery, causing not only inconvenience in walking, but also abdominal pain, nausea and other uncomfortable symptoms. Generally speaking, for children under six months of age, if the hernia sac is large and the contents of the hernia can freely enter and exit the sac, it will not cause serious consequences in the short term and parents can defer surgery without excessive tension; however, if the hernia is frequently incarcerated, it should be taken seriously and operated as soon as possible. Inguinal hernia over six months old has very little chance of healing on its own, so parents should not be under any illusion and should actively perform surgery as early as possible. Regarding the manual repositioning of inguinal hernia, it is only a means to save the emergency, treating the symptoms but not the root cause, and should not be used repeatedly for the same patient. There are strict indications for manual repositioning. Generally, if the time of incarcerated hernia is less than 10 hours and the patient is in good general and local condition, manual repositioning can be tried, but it is better to be operated by a professional pediatric surgeon who has been working for more than 3 years. The resetting technique is very skillful, because the pediatric intestinal tube is relatively weak, the intestinal wall edema, increased brittleness after impaction, rough operation is likely to appear intestinal tube rupture, blood in the stool, fever and other adverse consequences.