Because, lying on a hard board bed can make the spine to maintain the normal physiological curvature, and too soft bed, such as some less elastic spring bed, because of the local force collapse of the spine in an abnormal state, a long time in this state, will cause the imbalance of the spine force and spasm of the surrounding muscles, the spine does not get a good rest, will aggravate the patient’s condition. Is sleeping on a hard bed directly on a bare bedpan? In clinical work, some patients may ask: Does lying on a hard bed mean sleeping directly on the bed board or just laying a thin mattress? In fact, the hard bed is required to lay about 10 cm soft pad on the hard bed board, soft pad can be composed of soft palm pad, wool felt, feather quilt, silk quilt, mattress and other combinations according to the season respectively, and frequent drying of the mattress can keep the mattress soft. Such a bed will not make the person sleeping on it feel uncomfortable bone protrusion parts clucking, at the same time, and can withstand the weight of the human body, will not cause excessive curvature of the spine, conducive to the healing of lumbar disc herniation patients disease. This bed is also of great significance for the maintenance of spinal health of healthy people. Some spring beds with very good design and workmanship are also available. However, a common problem with innerspring beds is that the springs can age over time and become less elastic, causing local collapse. The solution is to regularly change the direction of the innerspring mattress and the position of the mattress you sleep on.