The lumbar back muscles are one of the important structures to maintain the stability of the lumbar spine. Strengthening the exercise of the lumbar back muscles helps to maintain and enhance the stability of the lumbar spine, thus delaying the process of lumbar strain and degeneration, and can effectively prevent acute and chronic lumbar injuries and lumbago. Due to lumbar pain and bed rest or wearing lumbar girth treatment patients, lumbar inactivity, no force, in the long run can cause disuse atrophy and weakness of the lumbar muscle, therefore, should strengthen the exercise of the lumbar back muscle. 1, straight leg raise: straight leg raise, take the flat lying position, knee straight, foot up, the amplitude is appropriate, gradually increase the number of leg raise, first single leg, then double leg, three times a day, 3~5 beats each time, and then increase 1 beat each time every day. 2, front and back leg swing: right side lying, left hand holding the bed, right leg slightly flexed, left leg straight. Left leg upward side, swing forward, swing backward, while raising the head and chest. After doing two 8 beats, switch to the right leg. 3, arch bridge style: daily practice more than ten times to more than a hundred times, each group of 10 to 20 times, at least 2 times a day. Last for about 5 seconds each time, then relax the waist muscles and put down the hips to rest for 3 to 5 seconds for a cycle. (1) Five-point pose: Lie on your back, go to the pillow and bend your knees, put your elbows and back against the bed, lift your abdomen and hips upward, and rely on your shoulders, elbows and feet to support the weight of your whole body. (2) Four-point pose: On the basis of five-point pose, hands and feet support the weight of the whole body. (3) Three-point pose: On the basis of the five-point support method, the arms are placed in front of the chest, and the head and feet are used to support the weight of the whole body. (4) Flying Swallow: You can practice more than ten to one hundred times a day, 8-12 times per group, according to your ability. At least 2 times a day. Each time for a few seconds or longer. (1) small flying swallow: the patient lying prone on the bed with the abdomen collapsed waist, head up, arms force back extension, legs back lift as swallow flying style. (2) Swallow: lying prone on the bed, go to the pillow; hands behind the back, lift the head with force, so that the head and chest leave the bed; at the same time knee straight, the two thighs force backward also leave the bed; last 3-5 seconds, then muscle relaxation rest 3-5 seconds for a cycle. 5, space car: that is, pedal air force, supine position, hands naturally placed on the side of the body or pad in the waist to protect the waist, two knees straight, the use of hip torsion force, along the horizontal axis, the left limb down, while the right foot up, shaped like a stepping movement. But it must be noted that the two legs are always kept straight and do not leave the bed. The right foot steps down and the left foot lifts up, and the time gradually increases. Notes on the functional exercise of the lumbar back muscle: 1, the number and intensity of lumbar back muscle exercise must be different from person to person, should be gradual, and the amount of exercise can be gradually increased every day. 2, do not exercise suddenly too hard, to prevent the exercise of the lumbar muscle and twist the waist. This is a static training, you only need to slowly force on it. 3, such as exercise the next day after the lumbar pain, discomfort, stiffness, etc., should be appropriate to reduce the intensity and frequency of exercise, or stop exercise, so as not to aggravate the symptoms. 4, if already have back pain, stiffness, discomfort and other symptoms, should stop or reduce the lumbar back muscle exercise; in the acute onset of low back pain should be timely rest, stop the exercise, otherwise, may make the original symptoms aggravated. 5, chronic disease patients should not exercise too long, the amplitude should not be too large. The standard is that they do not feel tired. 6, trauma patients are prohibited from exercising in the acute phase.