Lumbar protrusion is lumbar intervertebral disc herniation. Rehabilitation exercises for lumbar intervertebral disc herniation include lumbar back muscle training, lunge walking, and backward leg extension exercises. The above actions can train the lumbar muscle strength, help increase the inner stability of the spine, and delay the development of the disease. 1. Lumbar back muscle training: remove the pillow, lie on your back, use both elbows, head and heels as support, raise your hips off the bed, try to convex abdomen forward in the shape of an arch bridge, maintain for a few seconds and then slowly fall down, and repeat this many times. 2. Lunge walking: take a big step forward with one foot, make the knee flexion greater than 90 degrees, straighten one foot behind, maintain for a few seconds, walk forward alternately with both feet, keep the upper body upright, head up, and swing the arms naturally. 3. Backward leg extension exercise: hold the handrail or bedside with both hands, lift the chest and head up, straighten the legs, alternately backward extension and swinging, the amplitude gradually increases. Patients with lumbar intervertebral disc herniation should avoid or reduce bending in daily life, such as lifting heavy objects, they should squat down to pick up the heavy objects first, and then get up slowly. Exercise should be carried out under the guidance of a professional rehabilitation physician to avoid secondary injuries caused by incorrect posture.