1, standing posture ① correct standing posture is knee slightly flexed, natural abdominal, chest up, so that the body’s center of gravity from the mastoid process behind the ears down through the central transverse axis of the hip joint, the front of the second sacrum, to the front of the knee joint and ankle joint, falling on the weight-bearing foot. At this point the body’s gravity line just through the lumbar vertebral body or the rear of the intervertebral disc, can effectively prevent the nucleus pulposus from protruding again. Poor standing posture, especially the spine is not correct, will cause uneven force on the disc, is the cause of the disc protrusion (expansion) of the hidden root. The correct standing posture should be two eyes flat, jaw slightly inward, chest up, waist straight, calves slightly closed, two legs upright, the distance between the two feet is about the same as the width of the pelvis, so that the entire pelvis will be tilted forward, so that the whole body gravity evenly from the spine, pelvis to the lower extremities, and then from the two lower extremities to the feet, in order to become a real “feet on the ground” . At this time, the body’s gravity line just through the lumbar vertebral body or intervertebral disc, can effectively prevent the nucleus pulposus subprotrusion. ②The standing position should be taken during labor is: knee joint slightly flexed, gluteus maximus gently contracted, natural contraction of abdominal muscles, which can make the pelvis slightly backward, lumbar vertebrae mildly straightened, reduce the angle of lumbosacral angle, increase the spinal support, reduce the burden of intervertebral discs. ③ long time a posture standing is not possible, can be changed to “rest” posture, that is, one foot half a step forward, so that the weight on one lower limb, and the other lower limb to rest a little, alternating sides. Standing should not be too long, should be appropriate in situ activities, especially lumbar back activities, in order to lift the lumbar back muscle fatigue. Once a bad standing posture is found, it should be corrected in time. A good standing posture can, to a certain extent, avoid the nucleus pulposus from protruding again. 2.Sitting posture The correct sitting posture is to sit with the upper body straight, abdomen tucked in, jaw slightly tucked, and both lower limbs together. If possible, it is best to put a footrest or footstool under both feet so that the knee joint is slightly higher than the hip. If you sit on a chair with a backrest, it should be in the above posture on the basis of the back as close as possible and lean on the back of the chair, so that the lumbosacral muscles are not too fatigued. In addition, should not sit below 20cm low stool, should sit on a chair with a backrest, which can bear part of the weight of the torso, so that the lumbar back is relatively in a relaxed state, reducing the chance of lumbar back strain injury. 3, sleeping posture of people can be broadly divided into supine, side and prone three ways. Supine, as long as the sleeper is suitable, the limbs remain naturally extended, the spinal curvature does not change much. Side lying generally do not have to pay too much attention to the left or right side lying position, because people in sleep in order to get a more comfortable position, always turn over and over, about 20-45 times a night. Prone position when the chest pressure, lumbar convexity increased, easy to produce discomfort. Therefore, the correct sleeping position should be supine and side lying. Patients with conditions, supine position should be a soft pillow under both lower limbs, so that both hips and knees are slightly flexed, the whole body muscles relaxed, the pressure on the intervertebral disc is reduced, reducing the tendency of the disc to protrude, but also reduce the tension of the iliac lumbar and sciatic nerves, which can effectively prevent the recurrence of lumbar disc herniation, is the best position for patients with lumbar disc herniation, side lying generally do not have to pay too much attention to the right or left side lying, to The human body should feel comfortable.