Ecological characteristics of wheat phytonematodes and wild-growing cereals in Uzbekistan are given in the article. During the study, 237 species of phytonematodes belonging to 2 subclasses, 8 orders, 37 families and 83 genera were found. The observed species by ecological groups were distributed as follows: pararisbionts-51 species, eusaprobes-18, devisaprobionts-63, potential parasites-84, present parasites-21 species.