The symptoms of leg numbness are mostly related to arteriosclerosis and ischemia, and some patients with lumbar spondylosis should be examined. For example, check whether blood lipids and blood sugar have increased, because high blood lipids will aggravate arteriosclerosis, and high blood sugar will cause neuropathy and numbness of hands and feet. It is also necessary to do Doppler ultrasound examination of the affected limb to understand the arterial blood vessels, blood flow velocity and ischemia of the affected limb. If there is ischemia, you can choose to use drugs to promote blood circulation and improve blood circulation under the guidance of a doctor, and supplement vitamins b 1, b6, C, etc. Smokers should quit smoking and actively treat patients with hypertension, hyperlipidemia or diabetes. At the same time, pay attention to keeping limbs warm to prevent trauma, and can also be used for acupuncture or physical therapy. To rule out lumbar diseases, lumbar ct examination should be done.