In case of back pain, it is recommended to sleep on a hard bed. It is best to take a flat position, you can also take the side lying position, not too long. Hard bed can be a 3-5cm cushion or quilt on a hard bed for sleeping, which can effectively support the weight of the body, support the waist, but also to avoid the body protrusion of the body parts suffered from the extrusion of the hard bed extrusion injuries, such as hips, sacrum, shoulders, elbows, heels, etc., if the bed is too hard will cause extrusion injuries in these parts. You can also buy a slightly hard spring mattress, to do the side lying position when the human spine is in a horizontal line, can not appear up and down the uneven situation, will lead to a lack of lumbar support, thus aggravating the symptoms of back pain. So patients with low back pain is best to lie flat on a slightly hard bed, side lying position can also be taken, not too long.