In recent years, thoracic endovascular aortic repair (TEVAR) has shown promising results for Stanford type B aortic dissection. The aortic arch has a complex structure, with non-planar curvature and its supra-aortic arch branches are supplying vessels of the brain, upper limbs and other important areas, in which the left subclavian artery gives off important branches that include the vertebral artery perfusing the left upper limb and posterior portion of the brain. For ensuring sufficient landing zone, some special treatments should be made if the distance between proximal entry tear and the opening of the left subclavian artery is less than 1.5 cm. Here, the authors address the treatments of the left subclavian artery during endovascular repair of Stanford type B aortic dissection.