Cyanosis or necrosis of the fingers is an ischemic symptom of the upper extremity in the clinical picture of subclavian artery steal syndrome. The common ones are intermittent dyskinesia, upper limb weakness, pain and sensory abnormalities, and very few cause cyanosis or necrosis of fingers. Daily life should pay attention to prevent the following aspects: 1, must strengthen the hip self-protection awareness. 2, when to pay attention to the foot, be careful of falling, especially in winter ice and snow when walking to pay attention to anti-slip fall. 3, before sports, to do a good job of hip preparatory activities, feel the body heat, limbs flexible degree. 4, when carrying heavy objects, to avoid hand sprains, try not to do too heavy work. 5.Intentional weather changes, wind, cold and dampness, and re-injury. 6, rack double crutches to reduce the weight. 7, aquatic products. Because aquatic products can cause metabolic substance disorders in the body, triggering gouty arthritis, joint anonymous swelling and pain. 8, diet, do not make weight gain. 9, anti-fracture, prevent bone joint surface collapse. 10, internal function exercise (such as internal rotation, external rotation, air stirrups, etc.). 11.Add vitamin D to enhance calcium absorption (take under doctor’s supervision).