Introduction (relevance). The formation of intestinal microbiota directly depends on human eating behavior and is expressed in both quantitative and qualitative characteristics. Purpose of the study: hygienic assessment of the consumption of food products of plant origin and the species diversity of the intestinal microbiota in an organized (organized) closed community. Materials and methods. The study included 120 males (100%), forming an organized closed-type team. An assessment was made of the actual nutrition of the surveyed individuals based on the method of 24-hour diet reproduction. The intestinal microbiota was studied by MALDI-ToF mass spectrometry using an extended range of nutrient media. Statistical analysis was carried out using specialized software. Results. When consuming the product group “Porridge, cereals, pasta”, Enterococcus spp is detected. (p = 0,021), Paeniglutamicibacter spp. (p = 0,027), Sinomonas spp. (p = 0,036), Staphylococcus spp. (p = 0,043); “Bread, bakery products, pastries” are detected by Bacteroides spp. (p = 0,028); Leguminous plants are identified by Limosilactobacillus spp. (p = 0,001); “Vegetables, vegetable dishes” are detected by Bifidobacterium spp. (p = 0,045), Liquorilactobacillus spp. (p = 0.001), Salmonella spp. (p = 0,036); “Potatoes, potato dishes” is detected by Kocuria spp. (p = 0,039), Lactobacillus spp. (p = 0,040); “Fruits, berries, fruit and berry drinks” are detected by Bacteroides spp. (p = 0,020), Comamonas spp. (p = 0,015), Proteus spp. (p = 0,046), Pseudarthrobacter spp. (p = 0,015). Conclusion. The results of the study confirmed a number of relationships between the consumption of certain foods of plant origin and the formation of a stable intestinal microbiota with certain qualitative and quantitative characteristics.