Plant samples of the studied species of the genus Euphorbia were collected from several provinces, including central and northern Iraq, during the 2021-2022 season, as these species included: E. macroclada, E. hirta, E. falcata, E. Craspedia, E. helioscopia, E. peplus, E. spp, E. spp (2) and E. denticulata. The results showed that the phenolic compounds that were detected were nine: Gallic acid, Quercetin, chlorogenic acid, Caffeic acid, Syringic acid, Ellagic acid, Ferulic acid, Kaempferol, and Myricetin. The studied plant species were divided into several groups according to the total content of phenolic compounds, namely: a group with a high content of phenolic compounds in which the total concentration of phenols was more than 1000 mg/L, including type E.spp, and a group with a medium content of phenolic compounds, the total concentration of the compounds ranged Phenolic content ranged between 700-900 mg/L including the species E. Craspedia, E. peplus and E. spp(2), and a group with a low content of phenolic compounds in which the total concentration of phenolic compounds was less than 600 mg/L included the species E. macrolaeda and E. Craspedia, E. hirta, E. falcata, and E. Helioscid.