The common causes of frequent numbness of the foot, including the following aspects: First, the presence of chronic strain injury in the lower limbs or feet, due to the persistence of chronic strain injury, local tissue congestion, edema, inflammatory reaction stimulates the local sensory nerves, sensory abnormalities lead to symptoms of numbness, due to the persistence of strain injury will lead to frequent symptoms of numbness in the foot. Second, seen in lumbar diseases, common lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, due to degeneration, strain and trauma, the lumbar nerve roots of the lower extremities to produce stimulation and compression, the appearance of abnormal sensation of the foot. Third, it can be seen in other diseases of the body, such as diabetes, gout, and rheumatism, rheumatoid arthritis, can also affect the sensation of the foot, the appearance of peripheral neuritis of the foot, resulting in frequent symptoms of numbness.