An experimental saccular aneurysm model was made at the bifurcation of the common carotid artery in rats. Thirty albino rats were used. We histologically examined induced aneurysms in common carotid bifurcation of rats in the first, seventh and fourteenth day postoperatively and discussed the results. This aneurysms model has several advantages and it is also possible to use this technique to produce satisfactory experimental saccular aneurysms in other studies.