The leguminous valley meadow vegetation (species composition and structure of formations), which spread in the winter pastures used as a natural feed source for nomadic sheep breeding within the administrative districts Beylagan and Agjabadi located in the Mil-Karabakh massif, was studied and classification schemes were developed during the geobotanical research. 1 tp, 10 formation classes, 10 formation groups and 16 associations were identified during the phytocenological study of vegetative groups and measures for their effective use were proposed. Conducting geobotanical research in the Mil-Karabakh massif is relevant in terms of the efficient use of summer and winter pastures, hayfields, prevention of desertification, etc. in the Republic of Azerbaijan.