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Coccidiosis is a common disease in poultry and causes high pathological and economic losses especially in young birds. This study was in five regions in Thi Qar province, Iraq. Where he collected (330) samples for three seasons (winter, spring and summer). The total infection rate was 64.54% highest rate of infection during the spring of 75.75% with a significant difference at (P≤0.01). Area of Nasiriyah recorded a higher infection rate of 72.72%, with a significant difference from other study areas. In study diagnosis two types of Eimeria (E. bateri and E. tsunodai) rates of infection were (59.62%, 40.37%) respectively, The time of sporulation was recorded within (48-72 hours). Pathological tissue sections revealed clear changes to the cecum and the presence of different stages of the parasite.