The invention discloses a pulse signal automatic extraction device and an extraction method thereof. The pulse signal automatic extraction device comprises a supporter, a fixing component and a control circuit board, wherein there lifting devices matched with positions of three parts of Cun, Guan, Chi of a human body are installed on the supporter, each lifting device comprises a motor vertically fixed at the upper part of the supporter, lead screws are fixed at the lower ends of motor rotating shafts, and sleeves are in threaded connection with the lower parts of the lead screws, are installed at the lower part of the supporter and can only vertically slide relative to the supporter pressure sensors are fixed at the lower ends of the sleeves the fixing component is used for binding the pulse signal automatic extraction device on the three parts of Cun, Guan, Chi of the human body and the control circuit board is used for controlling the pressure sensors to collect pulse signals under different pressures. By fixing the pulse signal automatic extraction device on the three parts of Cun, Guan, Chi of the human body by the fixing component, the lifting devices are controlled to respectively apply pressure on the three parts of Cun, Guan, Chi of the human body through controlling the control circuit board, and pulse pressure waveforms of the corresponding parts are obtained by the pressure sensors, so that automatic extraction of the pulse signals of the three parts of Cun, Guan, Chi of the human body is realized.
