The invention provides a sleep physiology system and a sleep warning method. The sleep warning method comprises the steps of obtaining sleep posture related information and one or more pieces of sleeprespiratory physiology information of a user through a sleep system during sleep; and providing different warning condition combinations according to a comparison result of the sleep posture relatedinformation and a default posture range, further determining a corresponding warning behavior, and generating one or more warning according to the warning behavior so as to achieve the effect of influencing the sleep posture of the user and/or influencing the sleep respiration state of the user.
Sleep physiology system and sleep warning method