Abstract: Disclosed is a kitchen ventilation hood, which accelerates its exhaust by dividing the gas exhausted from an exhauster and by discharging the divided gas toward a suction port, thereby maximizing the efficiency of the exhaust action of the kitchen ventilation hood. The kitchen ventilation hood in which an exhaust fan is installed within its case, a suction port is formed on the bottom surface of the case and sucks gas generated from the kitchen, and an exhaust port is formed on the top surface of the case and exhausts the sucked gas to the outside, includes an exhaust acceleration unit including: a dividing plate being formed on the exhaust port so that the exhaust port is divided; a duct serving as a channel for transferring the divided gas, one end of the duct being connected to the dividing plate; a chamber connected to the other end of the duct; and a discharge port connected to the chamber and formed on the bottom surface of the exhaust acceleration unit.