Parabochevsky State Biological Reserve was founded in 1963 in the valley of the r. Terek (Chechen Republic) on an area of 12.0 thousand hectares. But information about its nature including flora is very limited. The purpose of the work. The study of the composition and systematic analysis of the flora, the identification of rare, relict and resource-useful species. Research methodology. Floristic studies were carried out in 2012–2015 in different seasons of the year along routes covering different sites and habitants of the reserve. To clarify the types 3-volume determinant A.I. Galushko "Flora of the North Caucasus" (1978–1980) was used. The attention is paid to the systematic composition of the flora, the presence of relics, rare and economically useful species. Results. The reserve has revealed 266 species of vascular plants from 205 genera and 71 families. The largest families – Asteraceae, Rosaceae, Lamiaceae, Fabaceae, Poaceae, Boraginaceae, Brassicaceae, Caryophyllaceae, Apiaceae, Malvaceae – accounted for 111 (54.1%) genera and 145 (64.4%) species. The largest are genus, including by (Artemisia, Centaurea), 4 species (Potentilla), 3 species each (Allium, Crataegus, Inula, Populus, Trifolium, Salix, and Viola). 2 species contain 40 genera. A total of 50 (24.4%) genera numbered 115 (43.2%) species. In the remaining 155 genera – one type. The Red Book Books (Allium paradoxum, Althaea officinalis, Amygdalus nana, Cephalanthera damasonium, Cucubalus baccifer, Cydonia oblonga, Eryanthus ravens, sites, sites, sites, sites, sites, sites, sites, sites, sites . woronowii, Salvinia natans, Tulipa biebersteiniana, Vitis sylvestris), other rare species (Allium ursinum, Chelidinium majus, Сlematis orientalis, Listera ovata, Physalis alkekengi, Oenothera biennis, Orobanche, you will also be looking for what you are looking for, if you are looking for what you and also your company is looking for, if you are looking for what you and also your company is looking for, this is what you and your company will be looking for. and tertiary relics (Euonymus europaea, Carpinus caucasica, Cornus mas, Corylus avellana, Lonicera caprifolium, Populus hybrida, Pyrus saucasica, Quercus robur, Rubus caesius, Sambucus nigra, Tilia cordata, Ulmus suberosa, herbal – Alliaria officinalis, Allium paradoxum, Arum maculatum, Convallaria transcauca sica, Humulus lupulus, Tamus communis, etc.). Conclusions. The flora of the reserve which is rich in systematic composition (266 species from 205 genera and 71 families) contains many relict, rare and economically useful species, most of which should be protected and reproduced.