The utility model provides a smoke ventilator who combines portable fume purification device, including: a smoke ventilator has and is equipped with an at least oil smoke suction port and an exhaust port to and set up the extraction fan on this oil smoke suction port, oil smoke filter net, set up in this smoke ventilator and the position on the position between this oil smoke suction port and this exhaust port, a fume purification device has a fresh air inlet and the hole of airing exhaust, and is provided with a blower fan and an oil smoke filter unit in inside, and the pipe of discharging fume, a first joint of connecting in this exhaust port has to and connect in the second joint of this fresh air inlet, wherein, inhale the oil flue waste gas of sending this pipe of discharging fume to in back row via this smoke ventilator, can rely on in this blower fan initiative inhales this fume purification device with the oil flue waste gas, make the oil flue waste gas purify the back through this oil smoke filter unit, discharge from the hole of should airing exhaust again.