The first thing that needs to be ruled out is compression of the cauda equina nerve in the presence of a herniated lumbar disc with anal cramping. Secondly, it is necessary to exclude the anorectal disease itself. 1. Cauda equina neuropathy: most of the lumbar intervertebral disc herniation or slipped triggered by local nerve compression, many patients will have lower limb pain, numbness, pain and numbness in the saddle area, serious sphincter dysfunction, constipation, incontinence, anal swelling and other problems. Male patients will also experience impotence. 2. Anorectal diseases: such as hemorrhoids, prolapse and other diseases can also cause anal swelling and other discomfort. You can consult the anorectal department in time, through the anal finger diagnosis, anoscopy and other examinations to make it clear. Lumbar disc herniation anal swelling should be timely medical treatment, under the guidance of the doctor for examination and treatment.