Smog is a rare disease of unknown origin, named smog because of the smoky appearance of the vascular network at the base of the skull after cerebral angiography. Although smoldering disease is rare in life, it is a major threat to the health of patients once they develop the disease, especially if they develop intracranial hemorrhage, which may pose a threat to their lives if they are not treated in a timely manner. On the other hand, the smoke vessels formed at the base of the skull have very thin and fragile walls, which may rupture at any time and cause cerebral hemorrhage. There can be severe headache, sudden unfavorable limb movement, and even syncope. Cerebral infarction and cerebral hemorrhage are very dangerous and have a high rate of disability and death. Therefore, once smog is detected and clearly diagnosed, it must be treated with surgery in time. So, what is the success rate of smog surgery? According to years of clinical results, direct bypass surgery can quickly establish the side branch channels of blood vessels and improve the symptoms of insufficient local cerebral blood supply in a short period of time, but the shortcoming of this surgery is that the scope of improvement is limited and the postoperative trauma to patients is large, so the effect cannot be better; while patching can induce the formation of neovascularization after surgery, but its shortcoming is that the effect is slow, and during this 3-6 months of vascular recovery period Patients with smoker’s disease are still in a dangerous situation, with the possibility of cerebral hemorrhage and cerebral infarction. The combined vascular bypass surgery commonly used in clinical practice is a more ideal surgical approach, which can achieve good therapeutic results by combining direct bypass and multi-factor patching on the same stage, which can well overcome the above limitations and defects, establish sufficient collateral blood flow channels and restore cerebral blood supply.