Cold legs and stomach, consider the lower limbs caused by insufficient blood supply, that is, arterial stenosis or spasm, commonly elderly patients with lower limb atherosclerosis occlusive disease. Especially with underlying hypertension, usually smoking all year round, are prone to lead to vascular spasm, and even the formation of atherosclerotic plaque in the lumen, stenosis will lead to insufficient blood supply to the distal end, the patient will also be manifested as the distal end of the limb cold, numbness, activity will lead to the exacerbation of the symptoms, should be systematically treated, pay attention to limb warmth, away from the environment of tobacco and alcohol. Some patients are caused by vasculitis, especially young patients, the cause is not known, and it is considered to be related to the humid environment, CT angiography can find that the lesions are segmental distribution, and should be given systematic vasodilator drugs. Usually pay attention to not catching cold or excessive activities, also easy to lead to lower limb arterial spasm, regular checkups.