Smoke disease is a relatively rare cerebrovascular disease, and although the incidence has increased in recent years, the number of people affected nationwide is not large. There are few cases reported in many places, and most local hospitals have little exposure to smog, and some primary care workers have never heard of the disease, so there is no way to treat it. As a result, many smog patients have to go all the way to Beijing to seek treatment. Some patients ask if smog patch surgery is possible. Actually, yes, for the treatment of smog, the traditional surgical methods are direct vascular bypass surgery and indirect vascular bypass surgery, of which indirect vascular bypass surgery is also called patch surgery. However, neither of these two procedures is particularly ideal, and both direct bypass and patching have their limitations. For example, direct bypass alone has limited improvement in blood supply, while patching alone requires about 3-6 months to take effect, during which time cerebral infarction and bleeding may still occur. Therefore, patching alone is not the best option for treating smog, nor is direct bypass alone. Currently, combined vascular bypass surgery is a more advanced and effective treatment modality, which successfully overcomes the above mentioned problems. Combined vascular bypass surgery is a composite procedure, which is a combination of both direct bypass surgery and patching surgery in the same surgery. It can not only pass blood immediately after surgery, rapidly improve cerebral blood supply, relieve ischemic symptoms and prevent the occurrence of cerebral infarction, but also induce the formation of neovascularization for a period of time after surgery, which can improve cerebral blood supply in a larger area and further expand the effect of surgery, with a two-pronged approach for better results.