A hernia in a baby boy, also called an inguinal hernia, is mainly characterized by a protruding mass in the inguinal region. When the child cries, the mass protrudes from the body surface and even into the scrotum; when the child stops crying, the mass can be returned on its own or can be returned into the abdominal cavity with the help of hands. When the mass is protruding from the body, the child may cry due to local pain. If the hernia mass is protruding for a longer period of time, in addition to pain, there may be localized redness and pressure pain of the skin, as well as clinical manifestations of intestinal obstruction such as abdominal pain, abdominal distention, nausea, vomiting, and cessation of exhaustion and defecation. Of course, small intestine and large omentum are the most common hernia contents, and once they cannot be retracted, there is a possibility of necrosis of hernia contents. Therefore, once the hernia cannot be retracted, it is necessary to seek medical attention in time to avoid delaying the condition.