The monograph analyzes the current state of development of spinning methods, including pneumomechanical, the main trend in the development of which is to increase the productivity of machines by increasing speed, which sets the task of reducing energy costs, the successful solution of which requires the systematization of accumulated information on new methods of forming yarn and forming structures. - twisting devices, clarification of a number of issues of theory and technology, as well as the classification of methods for forming yarn. The monograph is intended for researchers, designers, technologists, masters and students involved in the development and calculation methods for improving cotton primary processing machines.