The starch peritonitis is a rare disease which is present in the patients recently submitted to a laparotomy. The ethology is an allergic reaction to the surgical glove starch. The symptoms are a continuous temperature, a leucocytosis and a eosinophilia. Macroscopically there is a micronodular dissemination of peritoneum with adhesion and a limited ascitis. Microscopically, there are gigantocellular granulomas with birifrangent inclusions to polarizing light. A diagnosis is difficult before surgery. The laparoscopy and the microscopic examination of ascitis can give a piece of information. The therapy is medical.