The neck pillow has the following roles: one, can play a very good support role for the head of the neck. For example, some special shaped neck pillows, like the u-shaped neck pillow, can play a significant role in supporting the patient’s neck and head during long trips to sit and stand. At this time, the patient can reach a deeper sleep in the sitting and standing position, at this time, even if the patient’s body has a slight sway, due to the support provided by such pillows, can make the patient’s head and neck remain relatively fixed. This allows the patient to get a relatively good rest, and it allows the neck to be supported and protected. Second, it can restore part of the physiological curvature of the cervical spine. There are some special shaped cervical pillows that can support the cervical spine continuously after the patient lies on them, which can make the cervical spine continuously maintain a forward physiological curvature. Over time, it will play a corresponding auxiliary treatment effect on some neck diseases of patients. Third, can play an effective role in improving sleep. Some neck pillows through special shaping, can play an effective support for the patient’s occipital and neck, and make the patient’s tongue fall back phenomenon to get a significant improvement. At this time the patient will produce a significant improvement in sleep quality and reduce the snoring situation.