Smog is primarily treated surgically. Hemorrhagic smog is treated in the same way as ischemic smog. The goal of treatment for hemorrhagic smog is to prevent rebleeding by increasing the blood supply to the cerebral cortex and reducing the blood supply load to the smog vessels at the base of the brain; the goal of treatment for ischemic smog is to increase the blood supply and reduce ischemic attacks. There are several surgical methods to revascularize the brain tissue, including direct revascularization, indirect revascularization, and combined direct and indirect revascularization. Direct revascularization is mainly superficial temporal artery-middle cerebral artery bypass; indirect revascularization includes cerebral-dural-artery apposition, cerebral-temporal muscle apposition, cerebral-hypophyseal apposition and cranial multiple drilling; among them, superficial temporal artery-middle cerebral artery bypass is considered to be the preferred and effective treatment method.