In recent years, lumbar spine disorders have maintained a very high incidence. The lumbar brace (lumbar support) is widely used as a common conservative treatment. It is mainly applied to those who have mild symptoms, or whose symptoms are obvious but can be relieved by rest. At the same time, lumbar braking is also required after lumbar spine surgery treatment, and choosing the right lumbar brace (lumbar support) can help patients recover and consolidate the effect of treatment. However, there are many varieties of lumbar brace on the market, with different prices. To attract attention and earn profits, various kinds of lumbar brace with compound functions such as heat, moxibustion and salt pack are coming out. How do we go about choosing a waist circumference that suits us? A, waist circumference selection considerations: 1, good support: waist circumference generally lined with semi-rigid aluminum alloy or medical fiber plastic strip, play a role in supporting the protection of the lumbar spine, but also can limit the lumbar spine mobility. When shopping, you can try to break the bend, to deformation of about 10% is appropriate. 2, breathable: waist circumference of the material generally choose breathable material, so, after a long time to wear less sweat, not easy to allergic. Selection can be used to blow a simple method to assess the breathability of the material. 3, good comfort: both the comfort of the waistband lining, or the size of the waistband, will be related to the comfort of wearing, so, when buying and selling to try on personally. Second, the use of waist circumference precautions: 1, wearing waist circumference should strengthen the lumbar back muscle exercise, especially the prone position “Xiaoyanfei” and other items; 2, wearing waist circumference time can not be too long, generally in months, conservative treatment of low back pain patients for one month is better, post-operative rehabilitation patients two months is better, too long can cause lumbar muscle atrophy, lumbar stiffness, etc.; 3, 3, the lumbar girth should be worn loosely appropriate, too tight easy to contact with the pelvis friction, but also increase intra-abdominal pressure; too loose is not effective; 4, especially in the daytime in outdoor public places or when the amount of activity should pay attention to the lumbar girth protection, while the amount of activity indoors when small, especially when bedridden can be worn; 5, if there are uncomfortable symptoms, should promptly find a professional doctor for guidance, adjustment.