This research concerns (306)faecal samples from different regions in Baghdad from sheep were examined,the results showed that 230 samples were infected with gastrointestinal parasites with total rate 75.1% which included : 49.0% of coccidiosis ( 9 species of Eimeria were recorded E.parva, E.ovina, E.crandalli s, E. weybridgensi, E. pallida, E. granulosa E .faurei, E. ovinadalis E.marsica) , 21.2% Nematodes 7.84% ,6.5% ,4.5%, 2.2% for Haemonchus, Trichostrongylus ,Nematodiru,and Trichuris in respectively , while the percentage of trematodes & cestodes infections were 4.9% for fasciola 2.28% , Paramphistomum 1.6% , Moniezia 0.9% .Age factor influenced on infection percentage it is higher in younger with coccidiosis infection 25.4% while it is higher in aged animals with nematodes% 10.13 & 1.96% for trematodes & cestodes. Prevalence of coccidiosis infection showed seasonal diversity it is higher in winter, while the rate of infection with nematodes & trematodes is higher in summer & lowers in winter.