It is often said that “high pillow without worry”, but from a medical point of view, this is not scientific. When people sleep, the pillow is too high or too low will make the head, neck and torso distortion. The pillow is in close contact with the human neck, which in turn is closely related to the shoulder, waist muscles, ligaments, intervertebral discs and so on. Therefore, the quality of the pillow, whether the height is appropriate, directly affect the health of people. From the anatomical point of view, the cervical spine has a convex arc, called “physiological convexity”. Under normal circumstances, people are able to maintain this natural curvature. Whether standing or walking feel comfortable. When sleeping, should also maintain the normal physiological convexity of the neck, in order to meet the physiological needs of the cervical spine. Pillow cushion in the neck, its role is to make the cervical spine to maintain the normal physiological curvature, and make the neck skin, muscles, intervertebral discs, vertebral joints, blood vessels, nerves and through the neck trachea, esophagus and other tissues and organs in sleep, and the whole person together with relaxation. The role of the pillow is not only to support the physiological foreshortening of the neck, but also to accommodate the head, the back of the occipital convexity. Only then, the neck and the surrounding tissues and organs will be in a relaxed, natural, harmonious state. Choose the height of the pillow to vary from person to person. When lying on the side, the head, neck and torso should be at the same level. Pillow skin is best to use cotton, linen and other materials; pillow core is best to use buckwheat bark, mung bean bark and other materials with calming, antihypertensive effect.