This study was conducted for the purpose of evaluating infection with the parasite Fasciola spp in the city of Mosul for the period from June 2020 to June 2022, as the results showed that a total of 12.30% of cattle and sheep had Fasciola eggs in their feces with a significant difference between cattle and sheep,and the infection was high in cattle by 16% .The eggs of the Fasciola species are oval, brown to yellow in color, and have an operculum . There was no significant difference in the rate of infection with the Fasciola parasite and the sex of cattle and sheep examined, and with regard to the relationship of the rate of infection with the age of the animals infected , there were no statistically significant differences between the infection and the age groups of the sheep that were examined,while there was a significant difference between the cattle whose age was less than one year and cattle that were one to two years old and more than two years old. As for the results of the serological examination of 90 blood samples of cattle and sheep , the results of the seroprevalence of Fasciola in both cattle and sheep were22.22% and 8.88%, respectively, with no difference in the incidence of infection between all the cattle and sheep examined