There is a young patient from Henan, 28 years old, just married for one year. She started to have headache and dizziness six months ago, and had an MRI at the local hospital, which said it was lacunar cerebral infarction, and a CTA suggesting smog. But she doesn’t know if smog is hereditary and is now worried if it will be passed on to the next generation if she wants to have children. Smoke disease is a relatively rare cerebrovascular disease, which is caused by the narrowing or occlusion of the main arteries of the cerebral arterial ring bilaterally, followed by abnormalities in the vascular network of the skull base, which can cause cerebral infarction, cerebral hemorrhage, seizures, etc., and is very dangerous. There is no conclusive answer to the question of whether smog is hereditary. Smog can be congenital or acquired. However, some scholars have found that mothers and children or siblings in the families of individual smog patients can have similar diseases, so it cannot be ruled out that the disease has a certain genetic tendency. However, this is an isolated case, and there is no clear evidence that smog is hereditary. In any case, smog should be treated as soon as possible. Because the onset of smog can be very sudden, there is no way to know when an acute cerebral infarction or cerebral hemorrhage may occur, which is very dangerous and may even cause disability or death. Therefore, the disease should not be delayed. There is no effective conservative treatment for smog, and once diagnosed, surgery is required. Combined vascular bypass surgery is the most advanced and effective surgical treatment for smog, with excellent clinical results. Combined vascular bypass surgery is a combination of direct bypass and patching, which improves the blood supply to the brain in both the main artery and capillary network, with remarkable effects.