The tutorial presents the features of anatomy, morphology and physiology, causes of damage, principles of diagnosis and treatment of venous diseases. The features of the treatment of diseases of the venous system are outlined. For self-control, the manual contains test tasks and situational tasks. The manual is presented in Russian and English. The manual is intended for residents studying in the specialties of Surgery and Vascular Surgery in the study of the disciplines "Surgery", "Vascular Surgery".