Dural sac compression of lumbar disc herniation refers to the compression of the dural sac after the herniated nucleus pulposus or central type herniation, and the dural sac contains spinal nerve compression severely irritates the nerve roots causing radiating pain and numbness in the lower limbs. If the compression is severe or compresses the sacrum, spinal cord and nerves, it can cause weakness of the lower limbs and sometimes affect the function of urination and defecation. In general, if the compression is mild or bulging, or not very serious, conservative treatment can be carried out. Pay attention to rest, avoid exertion, cold, bending, weight bearing, regular review, and avoid excessive weight bearing. You can also apply nerve-nourishing drugs, such as oral methylcobalamin to nourish the nerve, oral analgesic and blood-stasis activating drugs can reduce the compression.