The soreness of the lower back is always due to the formation of chronic sterile inflammatory lesions in the muscles, ligaments and other soft tissues of the lower back, or in the surrounding bony structures. The muscle of the waist may be overly fatigued by bending, lifting heavy objects and other actions. During the night sleep, if the bed is not flat or the pillow has an inappropriate height, the entire lumbar muscles appear fatigued, so it is easy to induce lumbar pain. Should choose latex cushion, because there is a good shaping effect, can maintain the normal physiological curvature of the waist, it is not easy to fatigue. In addition, when lying in the flat position to put a soft pillow behind the thigh, keep the hip flexion, knee flexion, lumbar flat, muscle tissue can also become less tense, the symptoms can also be effectively relieved. In addition, it is necessary to keep strictly warm and not to get cold.