Intermittent claudication is also a common clinical symptom, manifested as soreness, swelling and pain in one lower limb after walking a certain distance with weakness, and the patient cannot stand the need to rest and can walk again after a while, so it is called intermittent claudication. With the severity of the disease, the walking distance may become shorter and shorter, for example, the original walking 2000 meters, then walking 1000 meters, and then 500 meters can not walk. The common cause of intermittent claudication is lumbar spinal stenosis, so an MRI of the lumbar spine can be done, and if lumbar spinal stenosis is found, surgery can be done to correct it. In addition, if the blood supply to the lower extremities is poor, a CTA examination of the iliac artery can be done to see if there is any narrowing of the vessels and arteries from the common iliac artery that branches off from the abdominal aorta down to the lower extremities, and if the blood flow to the lower extremities is insufficient because of the narrowing of the arteries after atherosclerosis, so that ischemia occurs after exercise, and similar symptoms can occur. Both of these conditions can be corrected by surgery, so intermittent claudication is a curable disease.