This study has been carried out on 171  aborted ewes in 13 sheep folds in 3 Syrian provinces (Aleppo-Alraqa -Der alzor). The culture of these samples has been done, then the biochemical tests have been carried out on the positive samples to distinguish Campylobacter fetus. It has been proved that 15 samples have shown positive results for Campylobacter fetus which equals 8.77%. 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. The research included the scientific discussion of this result, and the conclusions.