Cervical dural sac compression can be improved by strengthening the cervical dorsal muscles through functional exercises. Functional exercises include head tilt, swallow fly and shoulder shrug. 1. Head tilt exercise: take an upright position, hands naturally hanging down, feet shoulder-width apart, slowly raise your head, look up at the sky, and try to widen the angle of view, keep this position for about 15 seconds to recover the position, and repeat the above actions. 2. Swallow fly: first need a hard board bed, take the prone position face down, arms on both sides of the body, so that the arms, feet slowly backward and upward lift, feet as far as possible to lift away from the bed, while trying to lift the head to the chest and abdomen to support the body, maintain the posture for about 5 seconds to recover the position, repeat the action. 3. Shrug movement: take the upright position, shoulder shrug upward, and try to reach the ear area, maintain for about 5 seconds, and then slowly relax the shoulders, repeat this action. If you have symptoms of cervical dural sac compression, you need to exercise under the guidance of professionals, if it is difficult to relieve, you should go to the hospital in a timely manner, to clarify the cause of the disease and standardize the treatment, so as not to delay the condition.