There are many reasons for lumbar spine infection, the common ones are trauma, tuberculosis, lumbar spine surgery and so on. 1. Trauma: Because of the open injury of lumbar spine area, there is no timely debridement and suturing, inflammatory oozing and swelling of the injured surrounding tissues, bacteria can easily invade, resulting in bacterial infection of lumbar spine. 2. Tuberculosis: after the tuberculosis bacillus infects the lungs, it invades the lumbar spine with the blood flow and causes lumbar spine tuberculosis. 3. Lumbar spine surgery: such as after disc surgery, due to the contamination of surgical instruments, surgical process, bacteria into the lumbar spine area, induced infection, especially after percutaneous puncture and endoscopic discectomy, it is easy to cause lumbar spine infection. Lumbar spine infection may have other causes, such as joint injury, etc. If you have back pain and suspect lumbar spine and lumbar intervertebral space infection, you should go to the hospital as soon as possible, improve the examination to clarify the cause of the disease, and standardize the treatment under the guidance of the doctor.