A ventilation apparatus with a multi-section feedback compensation control; the ventilation apparatus comprising: a power conversion unit receiving an AC power voltage (Vac) and converting the AC power voltage (Vac) into a DC power voltage (Vo); the power conversion unit having a first resistor and a second resistor connected in series to the first resistor configured to divide the DC power voltage (Vo); a driven circuit electrically connected to the power conversion unit to receive the DC power voltage (Vo) and output a driven voltage; a DC motor electrically connected to the driven circuit and driven by the driven voltage outputted from the driven circuit; a current-sensing unit electrically connected to the DC motor and the driven circuit to sense an output current outputted from the DC motor; a voltage compensation unit electrically connected to the power conversion unit; the voltage compensation unit having a resistor; and a control unit electrically connected to the current-sensing unit, the driven circuit, and the voltage compensation unit to receive the output current and produce a plurality of threshold current values comparing to the output current; wherein the control unit is configured to produce a pulse-width modulation control signal (Spwm) or a digital control signal (Sd) to control the voltage compensation unit generating a compensation voltage to introduce the resistor to connect in parallel to the second resistor, thus changing equivalent resistance value of dividing the DC power voltage (Vo) to regulate the DC power voltage (Vo), thus adjusting speed of the DC motor through the driven circuit according to each threshold current value comparing to the output current. a power conversion unit receiving an AC power voltage (Vac) and converting the AC power voltage (Vac) into a DC power voltage (Vo); the power conversion unit having a first resistor and a second resistor connected in series to the first resistor configured to divide the DC power voltage (Vo); a driven circuit electrically connected to the power conversion unit to receive the DC power voltage (Vo) and output a driven voltage; a DC motor electrically connected to the driven circuit and driven by the driven voltage outputted from the driven circuit; a current-sensing unit electrically connected to the DC motor and the driven circuit to sense an output current outputted from the DC motor; a voltage compensation unit electrically connected to the power conversion unit; the voltage compensation unit having a resistor; and a control unit electrically connected to the current-sensing unit, the driven circuit, and the voltage compensation unit to receive the output current and produce a plurality of threshold current values comparing to the output current; wherein the control unit is configured to produce a pulse-width modulation control signal (Spwm) or a digital control signal (Sd) to control the voltage compensation unit generating a compensation voltage to introduce the resistor to connect in parallel to the second resistor, thus changing equivalent resistance value of dividing the DC power voltage (Vo) to regulate the DC power voltage (Vo), thus adjusting speed of the DC motor through the driven circuit according to each threshold current value comparing to the output current.