If numbness in legs and feet occurs occasionally, it is considered to be due to long time fixed a posture resulting in local nerve compression, poor blood circulation caused by the symptoms of numbness in legs and feet. Generally, after changing the position and appropriate activities, the symptoms can disappear quickly and are not accompanied by other uncomfortable symptoms. If there is frequent numbness in the legs and feet, we should consider whether the numbness in the legs and feet is caused by a herniated lumbar disc or spinal stenosis, which leads to pressure on the spinal nerve. In addition, it may also be due to arteriosclerosis of the lower extremities, resulting in insufficient blood supply causing numbness in the legs and feet.