Wearing the right lumbar girth is an essential prevention method for lumbar disc herniation, and its main role is to Reduces the load on the lumbar spine, strengthens the lumbar muscle strength and increases the external stability of the lumbar spine. 2, is to limit the mobility of the lumbar spine. The excessive forward flexion or backward extension of the lumbar spine is limited by the lumbar protection, so that the lumbar intervertebral disc can get sufficient rest. However, when using it should be noted that when the condition is reduced and the symptoms are improved, then the lumbar belt should not be dependent and should be removed in time. 3, strengthen the exercise of their own lumbar back muscle to strengthen the support and protection of the lumbar spine with their own muscle strength. Otherwise, long-term unprincipled wearing lumbar will cause disuse atrophy of the lumbar back muscles and joint ankylosis. 4, time to about 30 days is appropriate, do not exceed 40 days.