The invention discloses a kitchen ventilator. The kitchen ventilator comprises an air outlet, a panel, a supporting box body, an LED lamp, a lower cover plate, an upper cover plate, a wireless Bluetooth receiver, a power button, a display panel, a speed controller, a signal emission port, a remote controller, an operation panel, an illumination button, a weak wind button, a strong wind button, anupper cover plate movable button, a pothook, a pull ring, a wind speed increasing button, a wind speed decreasing button and a switch button. The kitchen ventilator has the advantages that the wireless Bluetooth receiver is connected with the signal emission port arranged on the remote controller, the function of the remote control is achieved, so that the wind speed of the kitchen ventilator reaches up to optimum; a swash and suction separation port, a rotating motor separation port, a filtering separation port and a contact separation plate are arranged, multilevel separation and filtrationare carried out, so that the kitchen ventilator filters cooking fumes more efficiently, through the intelligent design of the upper cover plate and panel, the cooking fumes can be controlled comprehensively, and the kitchen ventilator prevents the leakage of the cooking fumes.