Anterior choroidal artery aneurysms（AChAAs） are rare in clinic，accounting for 2% to 5% of all intracranial aneurysms，and the rupture rate is 26.7%. Because of the complex anatomical structure and the relatively smaller diameter of the anterior choroidal artery（AchA），the surgical operation is difficult and high-risked. Often the postoperative complications are present，among which，the most common one is the AChA syndrome caused by the stenosis or obstruction of the AChA. The syndrome can severely affect the post－operative recovery of patients’ neurological functions. Through reviewing the previous literature，this study aimed at making a clue for the inducing factors of clip-induced ischemic compli－cations of AChAAs and their prevention approaches.