People in daily life and work, sitting in a variety of postures, all kinds of: some people sit on the edge of the chair and stool hips; some people are used to sitting backwards; some people like to cross their “legs” sitting posture and so on. These sitting postures from the surface seems to be nothing inappropriate, then, such a sitting posture is good? Some people think that no matter how to sit, as long as they feel comfortable, no effort on the line. But in fact, the correct sitting posture is not entirely determined by the comfort or not, effort or not. Some sitting posture in a short period of time can feel comfortable, no effort, but over time, the comfort will gradually disappear, and produce pain in the back. To be precise, the criteria for the correct sitting posture mainly depends on whether the spine, especially the lumbar spine, is as far as possible in line with the physiological curvature and biomechanical principles, in addition, should also look at whether the head and neck strain, whether the legs are relaxed and so on. So, what kind of sitting posture is the best? The correct sitting posture should be straight upper body, jaw slightly closed, double lower extremities together, and should also choose the right sitting furniture, in order to make the lumbar region in a relatively relaxed state, to reduce the chance of strain injury. Sitting in a chair with a backrest should be based on the above posture, as far as possible, the lumbar back close to and lean against the back of the chair, so that the muscles of the lumbosacral region do not become fatigued. Perhaps many people have been sitting for a long time after suddenly stand up will have a lumbar pain, waist straight up feeling, which is due to people sitting for a long time after the lumbar muscles in a state of long-term tension and spasm. Therefore, regardless of how to sit, correct or not, people should sit for a period of time after the activity of the waist, lower limbs and even the whole body. This is not only conducive to maintaining the physiological function of the lumbar spine, but also has a protective effect on other parts of the body. For example: when sitting for a long time can often straighten the waist, two shoulders back to expand a little, that is, the so-called “lazy back”, can also put a foot on top of another foot, constantly changing. In addition, sit down and stand up movements also have certain requirements. When sitting down, it is best to walk to the edge of the chair and stool, one foot behind the other foot, and then the upper body slightly leaned forward, slowly sit down, when standing up, it is best to first put a foot behind the other foot, gently and forcefully stomp the ground, so that the upper body from the position and up, at the same time, the upper body slightly leaned forward, in the process to keep the waist and back as straight as possible. For patients with lumbar disc herniation, in addition to correct sitting posture, correct sitting and standing movements are more important, as incorrect movements often cause the disease to recur.