Considers a case of successful endovideosurgical treatment of a patient with postoperative diaphragmatic hernia, admitted to the clinic of faculty surgery named after. I.I. Grekov North-Western State Medical University named after I.I. Mechnikov. The patient was hospitalized with a diagnosis of acute pancreatitis, however, as a result of the follow-up examination, taking into account the history and clinical picture, a diagnosis of left-sided postoperative diaphragmatic hernia was made. Diagnosis was carried out using spiral computed tomography of the chest and abdominal organs, as well as using radiation research techniques. According to the above studies, the contents of the hernia were the spleen and the bottom of the stomach. It was decided to perform surgery in the volume of laparoscopic removal of a diaphragmatic hernia on the left with a plastic reticular endoprosthesis. Intraoperative, early and late postoperative complications are not observed. Due to the choice in favor of a minimally invasive surgical treatment technique, the likelihood of complications was minimized. The favorable postoperative course was confirmed by x-ray data of the thoracic and abdominal cavities, performed on the5th day of the postoperative period. The absence of clinically significant changes in clinical and biochemical blood tests also indicates a smooth postoperative course. The patient was discharged for outpatient treatment in a satisfactory condition after12 days after surgery. The results of multispiral computed tomography of the thoracic and abdominal cavities, performed on an outpatient basis one month after the operation, confirm the successful outcome of surgical treatment.