The present utility model relates to a sensing pad of physiological electrical signal and a sensing mattress of using the same. The sensing pad includes a dielectric substrate, a plurality of electrode layers and at least one electrical connecting wire. The dielectric substrate has a plurality of sensing units, wherein each of the sensing units has a first surface and an opposite second surface. The electrode layers are respectively disposed on the first surface of each of the sensing units. The electrical connecting wire is electrically connected to the electrode layers. In this way, the physiological electrical signals can be sensed while a human body is lying on the sensing pad.本創作係關於一種生理電訊號感測墊及使用其之感測床墊。該生理電訊號感測墊係包含一介電質基材、複數個電極層以及至少一電連接線。該介電質基材係設有複數個感測區塊,各該感測區塊係具有一第一表面及一相對之第二表面。該些電極層係分別設置於各該感測區塊之第一表面。該電連接線係電性連接該些電極層。藉此,可感測躺臥於墊上之人體的生理電訊號。10‧‧‧生理電訊號感測墊11‧‧‧介電質基材111‧‧‧感測區塊111b‧‧‧第二表面12‧‧‧電極層C‧‧‧電容感測單元