The study aimed to identify (22)species belonging to the (Cyperaceae )family in Iraq ,the study included determining the environment and distribution of the species, and showed a noticeable variation in their distribution within the Iraqi provinces, Cyperus fiscus appeared widely spread throughout the Iraqi provinces , which appeared in 6 provinces :((MAM ,FKI,LCA,LEA,MCU,DGA), while C.conglomeratus ratt, C.ucheri, Cyperu leavigatus and Acorellulaeviglu were commen species ,with each species spreading to only one province, the other included B.tuberosus dest ,Cyperus rotundus, C.longus, C.difformis L was spread across different Iraqi provinces, the data were entered in a table that included the species under consideration , Iraqi provinces and soil type environment.