The clinical treatment of internal carotid cavernousfistulas (CCF) is a difficult area of neurosurgery, and the development of neurointerventional radiology has opened up new avenues for the treatment of these patients with remarkable results. Definition: CCF is an arteriovenous short circuit formed by the rupture of the ICA itself or its branches in the CS segment, and directly communicates with the CS, or in a few patients, by the communication of the external carotid artery with the CS to form an arteriovenous fistula. Etiology: CCF can be divided into two categories: spontaneous and traumatic. Spontaneous hypovolemic fistulas are generally incurable and have an incidence of 10%-60%. Traumatic CCF accounts for 75% of clinical cases, and most patients require surgical treatment. Surgical treatment: Traditional neurosurgical treatments include transcervical internal carotid artery trunk ligation, isolation and isolation plus embolization. The success rate of ligation of the ICA is reported in the literature to be less than 50% (35%-40%), whereas with the development of neurointerventional radiology, the majority of cases can be cured by detachable balloon embolization, which can both occlude the fistula and keep the ICA open, with a success rate of 89.9%-98 The success rate is 89.9%-98%.