Many patients with lumbar disc herniation are always asked to wear a lumbar girth after they are bedridden, in traction, and after they are discharged from the hospital. So, what is the role of wearing a lumbar girth to prevent and control lumbar disc herniation? 1, wear lumbar circumference for lumbar disc herniation patients, the main purpose is braking, that is, to limit the forward flexion, back extension and rotation movement of the lumbar spine, especially to assist the lumbar back muscles to limit excessive forward flexion movement, so that the injured lumbar disc can be fully rested, to create a good environment for the recovery of the patient’s condition. 2.Wearing lumbar circumference can bind the abdominal organs and lumbar vertebrae together, reduce the excessive activities of lumbar vertebrae, reduce muscle strain and ligament burden, and play a protective role. 3, after wearing the waist circumference, strengthen the strength of the abdominal muscles, reduce the lumbar vertebrae convexity, while the center of gravity shifted back, reducing the strain on the back muscles. 4, wearing lumbar circumference to a certain extent to strengthen the strength of the lumbar back muscle, strengthen the lumbar spine stability, to protect the waist from re-injury, that is, to a certain extent to avoid the recurrence of lumbar disc herniation, consolidate the effect of treatment is very beneficial. However, it should be noted that the wearing time of lumbar circumference should be moderate, because the use of lumbar circumference too long, can make the muscle and joint activities reduced, thus causing muscle wasting atrophy and dependence on lumbar circumference. Therefore, without aggravating the symptoms, the functional exercise of the lumbar back muscles and abdominal muscles should be strengthened to make the muscles strong and powerful and form a muscular waist circumference.