CONCLUSIONAs a result of the analysis of the mentioned formation groups and associations, it was determined that oil-contaminated vegetation on "research objects" in Azerbaijan was represented in 5 vegetation types, 9 formation classes, 9 formation groups and 15 associations. Among them, 1 formation group for semi-desert vegetation (Davetikanli -Mollabashilig) was discovered for the first time. In general, the results of the phytoecological studies we conducted in the vegetation of areas polluted with oil and groundwater in Azerbaijan show that the classification developed for the purpose of biological recultivation for the restoration of primary phytocenoses has important scientific and practical significance.