Peritonitis is a serious disease caused by bacterial infection, chemical irritation or injury. Peritonitis may be caused by pathogenic bacteria that infect the abdominal cavity through the bloodstream, lymphatic circulation, or the female reproductive system. Peritonitis can also occur as a result of other inflammatory diseases, such as perforation of abdominal organs, rupture of organs, inflammation or surgical contamination, perforation of appendicitis, perforation of gastroduodenal ulcer, perforation of enteric typhoid fever, acute pancreatitis, etc., and can also be caused by infections of the female postpartum period.