Heel numbness alert lumbar spine diseases such as lumbar disc herniation, cerebrovascular lesions such as cerebral infarction, lower extremity vascular lesions such as arterial closed embolism and heel diseases such as heel bone spurs. 1. Lumbar spine diseases: the more common ones are lumbar intervertebral disc herniation and lumbar spinal stenosis, which are accompanied by pain and numbness in the lower limbs, and can be clearly diagnosed by CT and MRI. 2. Cerebrovascular lesions: such as cerebral infarction and cerebral hemorrhage, etc., usually with a history of hypertension or long-term smoking and other bad life history, accompanied by headache and dizziness and other symptoms. 3. Lower limb vascular lesions: such as arterial occlusive vasculitis, which causes ischemic changes in the lower limbs, resulting in numbness and discomfort in the heel, etc., which can be clarified through angiography and other tests. 4. Heel diseases, such as heel bone spurs, stimulate the local neuropathy caused by heel numbness. Heel numbness also need to pay attention to whether there is trauma caused by local swelling or nerve damage, etc., in addition to long-term pressure can also cause heel numbness, need to exclude the physiological factors caused by rest, no improvement, it is recommended to go to the hospital in a timely manner.