We reported a case of carotid body tumor (Shamblin classification,typeⅢ) patient on whorn the tumor was tightly adhered to the carotid bifurcation and the carotid artery broke during the surgery,then autologous external jugular vein was employed to reconstruct the segmental defect of common-internal carotid artery after the tumor and involved common-internalcarotid artery was resected.The patient felt no complaint during the twoyear follow-up.Duplex scan demonstrated the patencyof transplanted external jugular vein was a good graft without formation of aneurysm.At the time of 2 years after surgery,the transplanted vein arterialized without obvious stricture.This case implies that the external jugular vein grafting is a candidate for reconstruction of segmental carotid artery.