Authors analyze their 25-year experience of endoscopic treatment of benign cicatrical strictures of esophagus and esophageal anastomotic strictures. Special attention is paid to technical aspects of bouginage of critical (diameter up to 2 mm) and substantial (3-5 mm of esophagus lumen) esophageal strictures. The advantages of the bouginage in comparison with balloon dilatation are substantiated. Basic principles of jatrogeny prevention are formulated, together with demonstration of complications, caused by too long stenting of the esophagus. The important role of planned sustaining bouginage for restenosis prevention is marked. Treatment tactics by excessive long esophagus strictures is defined.