Numbness on the soles of the feet when walking, mainly for the following reasons: first, lumbar disc herniation, with age, the human lumbar disc nucleus pulposus tissue will undergo degenerative changes, the fibrous ring is also prone to fracture, can produce lumbar disc herniation and compression of the nerve, will make the innervation area, such as the soles of the feet numbness symptoms. At the same time, it will also manifest as radiating pain in the lower extremities and loss of muscle strength in the lower extremities. The location of the herniated disc and the degree of nerve compression can be clarified by MRI or CT scan. Second, the pear-shaped muscle syndrome, the sciatic nerve penetrates below the pear-shaped muscle, if the pear-shaped muscle tension spasm or trauma, can stimulate the sciatic nerve, so that the sciatic nerve conduction function is severely impaired, will also show the clinical symptoms of numbness in the innervation area of the sole of the foot, generally after the electromyography examination, can clarify the sciatic nerve compression.