In the management of carotid cavernous fistula, detachable balloon has become the treatment of choice. However, technical difficulties are not uncommon, and transarterial balloon embolization fail in 5% to 10% of cases. Failure occurs because in some patients, the fistula orifice may be too small to allow entry. Using a tracker catheter system with Guglielmi detachable coils, we achieved successful transarterial occlusion of a carotid cavernous fistula with a small fistula.