To treat infectious peritonitis, the cause of the infectious peritonitis should be treated first and anti-infective treatment should be administered promptly. In general, peritonitis has causes, such as perforated appendix, which can lead to pain in the abdomen, presenting with pressure pain, rebound pain, and the appearance of a plate-like abdomen. It is recommended that patients must go to the hospital for relevant examinations in a timely manner, such as an ultrasound of the abdomen can be done to clarify the diagnosis, and then actively treated according to the diagnosis. The patient should also be treated with effective anti-infection therapy. It is recommended that the patient must keep the area warm and avoid getting cold in the abdomen, which can effectively relieve the symptoms of peritonitis. Patients are then advised to make sure that peritonitis is completely cured, which may require a long period of antibiotic application, at least about 7-10 days.