The author treats purulent peritonitis as follows: early operation is possible, and, if circumstances permit, it is useful to pre-prepare the patient with napertia, coffein, and intravenous injection of 20 cc. 40% grape sugar solution to reduce the danger of anesthesia to the heart; the site of the incision is chosen according to the localization of the process; the wound is lubricated with Peruvian balsam before opening the peritoneum; if peritonitis spills over, the abdominal cavity is flushed; if the infectious focus can be reliably turned off, drainage is not necessary; wire sutures. Careful stretching of rectal stomas after surgery facilitates the evacuation of gases and feces.