Introduction. Due to the inquiries of applied medicine obvious and relevance of clarification of blood supply of intercostal nerves. Studying of features of a branching of vessels in intercostal nerves can was is used for development of methods of anesthesia at intra chest operations, at the choice of methods and forms of operational cuts, at punctures of nerves, and also at assessment of clinical symptoms of different pathological processes. In literature there are rather detailed data on sources and features of blood supply of nerves, but vessels of nerves of a trunk which are not studied at all, first of all, of thorax walls.