The clinical and experimental study of postoperative complications of suppurative peritonitis (the pathologic commissure formation) has been done. The authors believe that the combination of the break of cytodynamic correlation in peritonitis centre and GIT paresis is a basis of pathogenesis of the process. The authors advocate combination of anticomissural preventive stern with cytomodulation and GIT paresis treatment. The abdominal ultrasonography has been used for the diagnosis. The main role in surgical treatment belongs to laparoscopy that made it possible to decrease the amount of relaparotomy cases. There were no lethal complications or cases of recurrency.