Swimming is a sport that is very beneficial to the body joints. There are four common swimming strokes, namely breaststroke, backstroke, freestyle and butterfly, and the best effect on cervical spine maintenance should be freestyle, breaststroke and butterfly also have certain benefits on cervical spine maintenance. The standard action of freestyle should be to lift the head slightly, eyes looking forward, not to the bottom of the pool, alternate arms paddling forward, the swimming process needs to change air, it is best to do both sides alternate air change to help the cervical spine is relatively large. Because when changing air and arms paddling, the cervical vertebrae can be in a natural bending state and the muscles of the neck and the ligaments between the cervical vertebrae are exercised because of the arms paddling action; alternating air on both sides is also to make the muscles and ligaments on both sides of the cervical vertebrae more evenly stressed, so that the cervical vertebrae are in a state that is not bent to both sides. But freestyle is more suitable for people without cervical spine related diseases, while butterfly and breaststroke are less burdensome to cervical spine and can also play the role of moving the neck, which is more suitable for people with related diseases in the neck.