Background &Method: The aim of this study is to assess to the role of preoperative bilateral intra-abdominal drain in the management of Abdominal Comportment Syndrome in cases of perforation peritonitis.Study of role of pre-operative bilateral intra-abdominal drain in the management of abdominal compartment syndrome in cases of perforation peritonitis. All the patients will be evaluated before and after the bilateral drain placement and after definitive surgery