The real project is the new stage of vast work on treatment, classification and preparation to the publication of the field materials of the Polesye этнолингвистической expedition to Ukrainian, Belarussian and Russian Polesye under the direction of academician Н. И. Tolstoy in 80 - beginning 90th of XX of century the Previous stage of research was supported by the research and publishing underbacks of РГНФ (underbacks № of 09-04-16221д, № 12-04-16088д), by a result what became appearance the first two volumes of the indicated materials (см.: Folk демонология of Polesye. М.: Languages of the Slavic cultures, 2010. Т. 1| 2012. Т. 2). A primary practical purpose of this project is scientific preparation to edition of corps of the field materials on Polesye демонологии, plugging in itself taking about мифологизации of the natural phenomena (for example, whirlwind) and human states ( for example, personifications of illnesses, fate, death), and also results of activity of "knowing" (jinxing, spoilage). For a publication the corps of materials is selected by volume of 30 and. л., containing information about thirteen mythological personages and phenomena. A theoretical and practical task of project is making and approbation of new principles of publication of the field materials, that not only enters in a scientific turn new texts in their authentic state but also presents them to the reader analytically treat and classified.Data about every personage are presented as a corps of mythological reasons, each of that is provided with separate comments. The field material described on single principle will not only allow to build a complete typology and classification of the Polesye mythological system but also will give an opportunity to trace dialectal distinctions in the mythological beliefs of different natural habitats of Polesye.In to work the typology of elements of the mythological system of Polesye will be described, the degree of their prevalence is analysed in the different natural habitats of the investigated region, that will give an opportunity to find out how демонология of Polesye is correlated with general восточнославянской tradition. For preparation of the real project texts were selected from 88 villages of Polesye, including: from 22 villages of the Brest region, 28 villages of the Gomel region, 5 villages of the Volhynia region, 7 villages Rivne region, 11 villages of the Zhytomyr region, 1 village of the Kyiv region, 8 villages of the Chernihiv region, 2 villages of the Sumy region, 3 villages of the Bryansk region