People with low back pain should sleep on a hard bed because a hard bed for the lumbar spine support than a soft bed, can prevent the patient’s spine from excessive curvature, better protection of the lumbar spine as well as the lumbar muscles. Low back pain people sleep hard bed not only can relieve the muscle tension around the lumbar spine, but also in bed to avoid their own gravity on the vertebral disc compression. It can also avoid the appearance of lumbar spine as well as hip subsidence. The human spine has four physiological curves: cervical, thoracic, lumbar and sacral. If a person with low back pain sleeps on a soft mattress, it will not provide proper spinal support and maintain its shape. Moreover, if the mattress is too soft, it may compress the nerves in the back, affecting blood circulation and even causing spinal distortion. And hardboard beds are not easy to deform and can reduce spinal distortion. Patients with back pain should seek medical attention in time to clarify the cause of the disease and then be treated under the guidance of the doctor, and follow the doctor’s advice to determine whether they need to sleep on a hardboard bed.