Seventy-six-year-old foot numbness may be physiological factors, lumbar spine disease, diabetes, lower extremity vascular disease, cerebrovascular disease and other factors. 1. Physiological factors: the elderly maintain a posture for too long or the feet are compressed, it is easy to appear numbness of the feet, reasonable activities can be improved on their own, do not need to carry out other treatments. 2. Lumbar spondylosis: with age, the lumbar spine will appear degenerative changes, may induce lumbar disc herniation, lumbar stenosis, lumbar spondylolisthesis and other lesions, the nerves innervating the lower limbs caused by compression, will cause numbness of the feet, accompanied by numbness of the legs, lower limbs, radiating pain and other symptoms. 3. Diabetes: seventy-six year olds suffering from diabetes for a long time, may lead to peripheral nerve damage, causing peripheral neuropathy, which can lead to numbness of the feet as well as numbness of the hands, which may be accompanied by hyperalgesia. 4. Lower extremity vascular lesions: the presence of vascular lesions in the lower extremities, such as varicose veins, vasculitis, etc., may affect the blood circulation of the feet, which will cause numbness of the feet, which may also be accompanied by swelling, pain and other symptoms. 5. Cerebrovascular lesions: when the elderly have cerebrovascular lesions, also prone to numbness of the feet, such as cavernous cerebral infarction, cerebral hemorrhage, etc., which can lead to limb dysfunction in severe cases. Seventy-six-year-old foot numbness, the duration of a longer period of time, should be alert to disease factors, it is recommended to seek medical treatment for appropriate examination and treatment.