Pediatric peritonitis is divided into two types: 1. primary peritonitis, which is relatively rare; 2. secondary peritonitis, which is more common in clinical practice. There are several clinical symptoms of pediatric peritonitis: 1. symptoms of peritoneal irritation, manifested as local or total abdominal pain, generally more intense, persistent, mostly local or total abdominal pressure pain, rebound pain accompanied by muscle tension. 2. late due to infection and toxin absorption will appear systemic symptoms of infection toxicity, with fever, chills, mental depression and other major symptoms, serious cases can also appear infection toxic shock, coma. 3. Coma. 3, can appear nausea, vomiting, abdominal distension, diarrhea and other accompanying symptoms, abdominal breathing in the abdomen gradually weakened or disappeared, abdominal distension is serious, children mostly have loss of appetite, mental state is getting worse, you need to go to the hospital as soon as possible to check, clear the cause and then timely treatment.