This study was performed to identify and classification of Aspergillus fungi at the chicks of broiler breeder. 340 Sample were collected from several farms of broiler from three main area of Syria (Middle, Northern, southern). The samples were taken from chicks which revealed respiratory sings. Results showed that there were three kinds of Aspergillus fungi, they A. fumigatus, A. Niger and A. flavus and their percentages were 71.52 %, 20.61% and 7.88% respectively from the total samples in all Areas studied. This study was performed to identify and classification of Aspergillus fungi at the chicks of broiler breeder. 340 Sample were collected from several farms of broiler from three main area of Syria (Middle, Northern, southern). The samples were taken from chicks which revealed respiratory sings. Results showed that there were three kinds of Aspergillus fungi, they A. fumigatus, A. Niger and A. flavus and their percentages were 71.52 %, 20.61% and 7.88% respectively from the total samples in all Areas studied.