A kind of physiology information monitoring device includes a fixing piece, a movable plate, a piezoelectric sensing element, a push switch and an elastic element. Between piezoelectric sensing element and push switch setting what movable plate and fixing piece. Movable plate, which can be moved relative to what fixing piece along one of push switch pressing direction, makes one pressing state of push switch or a release conditions. Piezoelectric sensing element can be started when push switch is pressing state and export physiology information signal. When push switch is release conditions, physiology information monitoring device switches to battery saving mode. Elastic element is to drive movable plate to return back to a releasing position in non-stress, so that push switch is a release conditions. Above-mentioned physiology information monitoring device can recognize whether the situation of subject or subject exception and can reduce the consumption of electricity.一種生理資訊監測裝置包含一固定件、一活動板、一壓電感測元件、一按壓開關以及一彈性元件。壓電感測元件以及按壓開關設置於活動板以及固定件之間。活動板可相對於固定件沿按壓開關之一按壓方向移動使按壓開關為一按壓狀態或一釋放狀態。當按壓開關為按壓狀態時可啟動壓電感測元件輸出生理資訊訊號。當按壓開關為釋放狀態時，生理資訊監測裝置即切換至省電模式。彈性元件用以驅使活動板在未受力時回復至一釋放位置，以使按壓開關為一釋放狀態。上述生理資訊監測裝置可辨識是否有受測對象或受測對象異常之狀況且可降低電量的消耗。
