Through this study, approximately 100 quail birds are collected from November 2020 to June 2021 from Salah El-Din Governorate and dissected to investigate internal parasites from quail birds which are tapeworms such as and Diorchis. Sp, Raillietina echinobothride, as well as nematodes Ascaridia columbae, Ascaridia hemaphrodita and Capillaria columbae with different rates. The highest infestation recorded is in tapeworms in the genus Diorchis. Sp by 23%, while in nematodes the highest infection rate is recorded in the genus Ascaridia hemaphrodita by 21% in quails. The results of the study also show that the highest rate of infection of quail with internal parasites is recorded in May / 2021 with a rate of 26.0% following that during June / 2021 by 22.1%. The lowest rate is recorded in November and December 2021/ and January 2022 by 0.0%. The relationship reached by the results of measuring the rate of infection in quail birds with weight is an inverse relationship between the weight of the bird and the rate of infection, as the higher the infection rate, the lower the weight.