Choice of operative timing and method on acute diffuse peritonitis SUO Jian. Department of General Surgery，the First Hospital of Jilin University, Changchun 130021，China Abstract Acute diffuse peritonitis is a common surgical emergency, which has acute onset and rapid progression, usually with severe and complicated clinical situations. Surgery interventions play an important role in treatment of acute diffused peritonitis, which can control the progression of such condition efficiently, thus affect the prognosis of the disease strongly. In the paper, as a hot topic, it discussed choice of operative timing and method applied to a certain case.