Squatting for a long time feet numbness generally does not cause any harm. Normal people squat for a long time will have numb feet, this is because after squatting for a long time will be compressed to the lower limbs of the blood vessels, muscles and nerves, resulting in a reduction of peripheral blood supply, causing transient obstacles to neurotrophic, numbness, activity after the symptoms can be relieved. But if the squatting time is not long also appeared foot numbness, need to be alert to whether there is a peripheral vascular circulatory disorders, should improve the vascular ultrasound of the lower limbs, clear whether there is atherosclerosis plaque formation, whether there is vascular occlusion or stenosis. If there is vascular occlusion or stenosis, it may cause intermittent claudication, as well as ischemic polypoidal peripheral neuropathy, and even ulcers and limb necrosis in serious patients. In addition, atherosclerotic lesions of the cardiovascular and cerebrovascular vessels are often combined, and one should be alert for coronary heart disease or cerebral infarction.