The pain in the lumbar band with the leg is usually related to lumbar disc herniation, lumbar spondylolisthesis, hip arthritis and other diseases. 1. Lumbar disc herniation: when the condition of lumbar disc herniation worsens and compresses the nerve roots, the symptoms will involve the thighs, calves and buttocks, thus causing back pain and leg pain, which can be detected by CT examination. 2. Lumbar spondylolisthesis: When lumbar spondylolisthesis slips out of the vertebrae and presses on the nerves, it will easily lead to lumbar and leg pain, and in serious cases, the symptoms may radiate to the calves. 3. Hip arthritis: usually associated with long-term weight bearing, if you do not pay attention to the combination of work and rest, may lead to wear and tear of cartilage, easy to cause joint effusion, thus causing back pain, leg pain. The tendon pain connected to the waist and leg may also be lumbar spinal stenosis and other diseases. It is recommended to seek timely medical examination to clarify the cause of the disease and targeted treatment and therapy.