Smog, a name that reads between the lines and is both unfamiliar and mysterious, makes you want to see its true nature. So what is smog? The medical definition of smoker’s disease is an abnormality in the blood vessels at the base of the skull due to progressive narrowing or blockage of the main arteries in the brain. The disease is often classified as a cerebrovascular disease because it often leads to cerebral hemorrhage and cerebral infarction. The earliest appearance of smog in modern medicine was in the 1950s and 1960s, when it was first discovered and named by a Japanese scholar. Since then, smog has gradually come to the forefront of people’s minds and is slowly becoming more widely known and understood. Many scholars have speculated that the disease may be related to family genetics or may be an acquired disease due to metabolic cerebrovascular reactions. In fact, patients are more concerned about the treatment of smog than the cause of the disease. We are experienced in the treatment of smog; we introduced combined vascular bypass surgery from the medical association unit, which is done by direct bypass and indirect patching on one operation, establishing sufficient side branch blood flow channels for the brain and improving the brain blood supply to a larger extent with good effect, which has a greater advantage than traditional bypass surgery and single patching.