The invention discloses a physiological parameter monitoring device for resisting environmental disturbance and a physiological parameter monitoring method for resisting environmental disturbance. Thedevice includes a measuring member, a processing unit and an anti-disturbance member. The anti-disturbance member can effectively solves the disturbance, which causes a false alarm of physiological characteristic signals of a pressure sensor to external environment. The monitoring method is to obtain accurate pressure signals based on the physiological parameter monitoring device for resisting the environmental disturbance, thereby converting the pressure signals into the physiological characteristic signals.