In the posterior circulation, intracranial artery occlusion is common in the basilar artery, and basilar artery occlusion(BAO) carries high disability and mortality rates. A proportion of patients with BAO can endure the acute arterial occlusion and transform into the non-acute stage with the medical treatment. There is no consensus on the optimal treatment of non-acute basilar artery occlusion. With the practice of endovascular treatment for non-acute extracranial artery occlusion and the development of interventional technology in recent years, endovascular recanalization of non-acute basilar artery occlusion has received much attention. This article reviews the recent progress in order to improve the recognition of endovascular treatment for non-acute basilar artery occlusion.