A sleep monitoring device is provided for monitoring sleep behavior of a living body. The sleep monitoring device includes an arterial acoustic signal capturing unit and a processing unit. The arterial acoustic signal capturing unit is configured to capture an arterial acoustic signal of the living body. The processing unit is configured to process the arterial acoustic signal for obtaining sleep information of the living body based on the arterial acoustic signal.一種睡眠監測裝置,用以監測生物體之睡眠情形。睡眠監測裝置包含動脈聲紋擷取單元和處理單元。動脈聲紋擷取單元用以擷取生物體之動脈聲紋訊號。處理單元用以處理動脈聲紋訊號,以依據動脈聲紋訊號來得到生物體之睡眠資訊。100‧‧‧睡眠監測裝置110‧‧‧動脈聲紋擷取單元120‧‧‧處理單元
