A. What is atherosclerosis Atherosclerosis refers to the chronic degenerative proliferation of arteries due to atherosclerotic lesions, which finally leads to arterial stenosis or occlusion, resulting in a reduction of blood flow to the distal end, causing symptoms such as insufficient blood supply to the corresponding organs or limbs. The disease can occur in any artery of the human body, commonly found in: 1, lower limb iliac artery, superficial femoral artery, N artery and tibiofibular artery below the knee; 2, carotid artery, subclavian artery, vertebral basilar artery; 3, renal artery; 4, superior mesenteric artery; 5, abdominal aorta. The understanding of arteriosclerosis obliterans in Chinese medicine belongs to the category of “gangrene disease” and “pulse paralysis disease” in Chinese medicine. It is commonly known as “blood vessel blockage” and “broken legs and feet”. The Spiritual Pivot – Carbuncle Gangrene Chapter” shows: issued in the toe, called off the carbuncle, the shape of red and black, death is not treated; not red and black, do not die; do not decline, the urgent chopping, not is dead. Source and Criteria of All Diseases – Cold Hou of the Limbs of Deficiency Labors”: The meridians travel, they all start from the hands and feet, and the blood and qi are weakened by deficiency labors and cannot warm the limbs, so the limbs will be cold. The General Records of the Holy Spirit (《圣济總錄》):Blood’s warmth is declared to flow, and cold is condensed and astringent, and condensed and astringent does not work, then the skin and hair are atrophied, and the muscles are atrophied and paralyzed. Surgical Zhengzong”: the gangrene, external corrosion and internal bad, this is because of the thick taste of sorghum in the past, fumigation of the internal organs, Dan Shi tonic, eliminating flicker kidney water, room overwork, gas exhaustion essence injury, etc. …… Third, how the incidence of arteriosclerosis occlusive disease of the lower limbs of the arteriosclerosis occlusive disease occurs more than 45, the male-to-female ratio of about 6:1, incidence rate of about 10%, with increasing age, its incidence rate is about 10 per cent. With the growth of age, its incidence rate is on the rise, the incidence rate of people over 70 years old is about 20%. In recent years, with the change of lifestyle and increasingly serious aging, the incidence of peripheral vascular disease is rapidly increasing, peripheral vascular disease specialist has become a popular specialty. Fourth, atherosclerosis occlusive disease pathogenesis related factors 1, smoking: with long-term heavy smoking. 2.Obesity and hyperlipidemia: one of the important factors of atherosclerosis. 3.High blood pressure: causing endothelial damage at arterial bifurcation. 4.Diabetes mellitus: accelerate the process of atherosclerosis occlusion, at the same time there are diabetic microangiopathy to make the condition more complicated. 5.Others: dietary habits, mental stress, genetic factors and so on.