The human cervical spine is connected to the head and the torso and governs many activities of the neck, trunk and extremities, but it is also potentially vulnerable to injury and risk of damage. The incidence of cervical spondylosis is especially high for people who work long hours and with their heads down. The occurrence and development of cervical spondylosis can also lead to some other system diseases, such as arteriosclerosis, hypertension, coronary heart disease, headache and dizziness, which seriously affects people’s normal work and physical and mental health. Cervical spine exercise can both prevent and treat cervical spondylosis, and the exercise method is simple, or sitting or standing can be carried out. Activities of the preparatory posture: feet apart and shoulder width, two arms on both sides of the body, fingertips vertical down (sitting two palms on the two thighs, palms down), eyes flat in front, the whole body relaxed. Activities are as follows: 1, raise the head slowly upward to look at the sky, to extend the head and neck as far as possible to the maximum, and the chest and abdomen together upward (can not simply make the head up movement). 2, the elongated neck will slowly move forward and downward, as if a rooster crowing posture. 3, and then slowly backward and upward retraction of the neck. 4.Return to the ready position. Note: First, each continuous exercise takes about 1 minute; second, upward neck extension and backward neck retraction should be chest and abdomen; third, combined with the different conditions of each person can do several times a day, each time can be done several times. This neck extension exercise can improve the blood supply to the neck muscles and ligaments, so that blood circulation is accelerated, so that the muscles and ligaments are stronger, so that bone density increases, preventing osteoporosis, thus reducing the occurrence of cervical spondylosis. This exercise not only makes the cervical spine get exercise, but also makes the chest, abdomen and internal organs get exercise. This exercise method does not require a sports field, and can be performed anywhere, anytime, and is also an active method of rest.