Lying on your back with your legs up in bed does little to help a lumbar herniated disc. Because the lumbar disc herniation is the nucleus pulposus from the rupture of the annulus fibrosus, and the location of the overflow extrusion and compression to the corresponding nerve root, will produce nerve root irritation symptoms. Lying on the bed with legs up, the lumbar spine is almost no action, for the lumbar spine almost no effect and exercise effect. Will not affect the lumbar vertebrae and lumbar muscles. It will also not affect the lumbar nerve roots. Lumbar intervertebral disc acute period due to lumbar pain, leg pain and leg numbness is serious, it is best to lie down in a flat position, it is not suitable to lie down on the bed and raise both legs upward. It may cause lumbar pain symptoms to worsen. Intervertebral disc herniation is a chronic bone disease situation is more serious. Feel comfortable sleeping on your stomach, you can choose this position. Be careful not to sit up suddenly after getting up in the morning, you should get up slowly. Pay attention to more bed rest, do not sit for a long time, avoid physical labor. Lying on your back and lifting your legs upwards need to be under the guidance of a doctor to decide whether you can do it according to your condition.