The purpose of wearing a lumbar girth for patients with lumbar disc herniation is to reduce the load on the lumbar spine and to brake. The pathological change of lumbar disc herniation is that the herniated disc compresses the nerve roots, and the nerve roots become inflamed and edematous and produce a series of symptoms. Since the lumbar spine bears most of the upper body weight when a person is upright, the small joints of the lumbar spine bear a small portion of the weight in the force structure of the lumbar spine, and the most important is the vertebral body – vertebral l disc – vertebral body. If a patient with a herniated disc has to stand up, the majority of the weight of the upper body is pressed on the herniated disc, which can aggravate the degree of protrusion, especially when moving, the impact on the herniated disc is even greater. Wearing the right waist circumference, part of the upper body weight can be transferred down through the ribs – waist circumference – iliac bone, waist circumference generated by the wrapping force tension abdominal muscle, can also transfer weight. In this way, the force on the lumbar vertebrae – intervertebral discs – lumbar vertebrae is greatly reduced, and the compression of the nerve roots by the vertebral discs can be significantly relieved, which is conducive to the return of the intervertebral discs and the absorption of inflammation and edema of the nerve roots. Another role of lumbar circumference is braking, that is, restricting the activities of the lumbar spine, especially limiting the activities of lumbar flexion and lateral flexion, reducing the stimulation of the intervertebral disc, reducing the force on the lumbar muscle groups, thus creating conditions for the early recovery of the body. Lumbar circumference is an essential adjunctive treatment for lumbar disc herniation, and there are requirements for its size, hardness and material. The lumbar girth used by patients with lumbar disc herniation is generally made of leather or artificial leather, and the length of the girth conforms to the length of the patient’s waist, and the width is wider in the middle, that is, in the middle of the lumbar vertebrae, about 20. m. In the middle, about 30 cm long, that is, at the back of the lumbar vertebrae, 4-6 pieces of steel or bamboo plates of 20 cm long and 2 m wide are built in for vertical support. The two ends, which are also between the coercive ribs and the anterior (posterior) superior iliac spine and the abdominal position, are 10-15cm wide and can be slightly softer, and the entire waist circumference is reinforced with an ordinary belt bundled outside, which can be used easily by the patient. This not only limits the movement of greater activity, but also does not affect the appropriate activities of the patient, and is suitable for patients with lumbar disc herniation to carry out daily work, walking and riding in a car. The lumbar circumference is widely used in the treatment of lumbar disc herniation, but the wearing and use is not arbitrary, the following issues should be mainly noted: the wearing and use of the lumbar circumference should be flexible according to the condition. After the patient has been treated by vigorous traction or long-term bed rest, the lumbar girth should be worn down strictly in accordance with medical advice to consolidate the treatment effect. And when the condition is reduced and the symptoms disappear, the waist circumference should not be dependent, and should be removed in time to strengthen their own lumbar back muscle exercise to strengthen the support and protection of the lumbar spine with their own muscle strength. Otherwise, the long-term unprincipled wearing of lumbar girth will cause disuse atrophy and joint ankylosis of the lumbar back muscles, and the patient will not be able to leave the lumbar girth, otherwise the symptoms will increase, which is harmful to the treatment of lumbar disc herniation. The specifications of the lumbar girth should be adapted to the patient’s body type, generally up to the lower rib arch, down to the iliac crest, the posterior side should not be excessively convex, and the front should not be tied too tightly, and the good physiological curvature of the lumbar spine should be maintained. If the specifications of the lumbar girth are not appropriate, not only will the patient be uncomfortable after wearing it, but also, it will not play its proper role.