Bioecological assessment of the Shirvan flora have been performed. 2061 species of higher spore gymnosperms, angiospems, 1 species of algae, 6 species of lichens, 3 species of mosses belonging to the 764 geus and 44 tamiies are distributed in the Tregion. According to liie forms: 514%-perennial berbs, 36.436 annual and biennial herbs, 4.13% bushes, 5.159%- semibushes, shrubs and semishrubs 2.95% trees (61 specres). According to ecological groups: 1850 species photophilous plants, 101 specie Sciophilous plants, 110 species shade-tolerant plants, in relation to humidity xerophytes 73.55 mesophytes 15.58%, hygrophytes 8.29%, hydrophides 2,63%, in relation to nutrients eutrophic, oligotroph, acidophil, neurophil, basophil, indifferent and phytoindicators hatophytes,calciiteS pseudophytes, etc. . Ancient Mediterranean geographical areal type represented by 1138 species (5530 prevails in the formation o ihe region flora.