What is intermittent claudication? Intermittent claudication is a condition in which the patient has no obvious discomfort when he or she is not walking, but when he or she walks, the diseased lower extremity becomes sore and swollen, so that he or she has to stop and rest, and after a period of rest, the discomfort disappears and he or she can continue walking again. Clinically, we call this symptom intermittent claudication. The severity of intermittent claudication is usually judged by the distance of claudication and the time of relief. Intermittent claudication worsens in 20-25% of patients, mostly within 1 year, mostly in patients who continue to smoke and have poor glycemic control, with a 5-year amputation rate of 1-7% and a 5-year marker of systemic atherosclerosis, with cardiovascular mortality rates of 12%, 42%, and 65% at 1, 5, and 10 years, respectively. If the intermittent claudication is vascular, it must be treated promptly. Otherwise, further aggravation of limb ischemia or life-threatening cardiovascular events can occur. The following aspects must generally be taken care of. Smoking cessation Risk factor control Control of diabetes: HbAc < 7%< p=""> Control of blood pressure: less than 140/90, (combined diabetes and renal insufficiency should be less than 130/80), ACEI class recommended Control of lipids: LDL less than 100 mg/dl (high risk less than 70) Exercise: 30-45 min/time, 3-4 times/week for 3 months Antiplatelet drugs Surgery: severe impact on life, inter limp distance less than 200m