Pillow auto-lifting according to human body sleep posture

A pillow that can automatically elevate to suit sleeping postures pertains to household articles. In order to solve the problem of automatic elevation of the pillow, the utility model mainly consists of a pillow case (1), an air bag (2) and a balance weight unit (3). The air bag (2) and the balance weight unit (3) are both positioned in the pillow case (1) while the balance weight unit (3) is fixed to the relatively lower side of the air bag (2). Needed suitable upper hold force for the head can be achieved by adjusting the weight of the balance weight unit and the air content in the air bag. The pillow can automatically elevate or descend the height of the pillow face when the sleep posture of human body is changed. The pillow face will automatically descend when human body is lying on back and ascend when lying on side. The ideal need of the automatic elevation can be realized by inflation and adjustment of the balance weight when the pillow is used for the first time, thus, neck stiffness can be effectively avoided to reduce the happening of various neck diseases caused by pillow height.