The external carotid artery is one of two branches of the common carotid artery that supplies blood to the neck and face. External carotid artery ligation is performed to stop bleeding in the ear, nose, throat, teeth, and skull.

Internal carotid artery ligation surgery aims to prevent the spread of infection from the occluded side artery or occluded carotid artery, occluded internal carotid artery and its branches to other organs of the body.