This study has been carried out on 202 aborted ewes in 15 sheep flocks in 4 Syrian provinces (Aleppo – Alraqa- Alhasaka- Der alzor). Then the bacterial and biochemical tests have been carried out 202 samples. The samples were taken from the aborted ewes and its fetuses. The samples of aborted ewes are (gall-bladder, placenta, vaginal swabs) and the samples of fetuses are (liver, spleen, kidney, stomach contents). It has been proved that 15 isolates have shown positive results for campylobacter fetus which equals 7.4%. The highest percentage of abortions caused by campylobacter in Aleppo was 10.5%, whereas it was 6.9% in Alraqa, the percentage was 5.4% in Der alzor. No positive results have been recorded in Alhasaka. Most of positive isolates from ewes managed in concentrated system.