After three months of cerebral hemorrhage and smog disease, it is possible to perform cerebral bypass surgery after evaluation by a medical professional to prevent recurrence of cerebral hemorrhage or recurrence of other cerebrovascular diseases. Smoke disease, the etiology of which is currently unknown, is a cerebrovascular disease due to stenosis or occlusion of the ends of the internal carotid arteries predominantly bilaterally, secondary to the formation of an abnormal vascular network at the base of the skull. It is called “smog disease” because of the dense and disorganized capillary network that can be seen on imaging. Due to insufficient blood supply or abnormal growth of intracranial blood vessels, smoky brain disease is prone to transient ischemic disease, cerebral infarction, cerebral hemorrhage, and other cerebrovascular diseases, resulting in severe neurological deficits such as headache, cognitive, motor, and sensory dysfunction, and even life-threatening. Surgical bypass surgery is the mainstay of treatment for smog disease and is effective in preventing and treating cerebrovascular disease. Current guidelines suggest that early surgery is more beneficial, but only after the symptoms of cerebral infarction or cerebral hemorrhage have stabilized (usually 1 to 3 months). Treatment options for cerebral hemorrhage smoky disease need to be evaluated and determined by a medical professional.