The location of lumbar herniated disc pain is in the lumbar region, leg region, sciatic nerve pathway and distribution area, etc. 1. Lumbar: The lumbar pain caused by lumbar disc herniation is due to the herniated disc nucleus pulposus and other irritation and compression of the adjacent nerve roots, especially the ventral nerve branches, which will cause discogenic lumbar pain. 2. Legs: leg pain caused by lumbar disc herniation is caused by the herniated lumbar disc compressing the nerve roots that innervate the motor-sensory functions of the legs. 3. Sciatic nerve pathway and distribution area: the herniated lumbar disc compresses the sciatic nerve and causes nerve root compression, which damages the sciatic nerve and causes radiating pain and numbness along the nerve distribution area.