Exhaust hood type microwave oven and air duct system thereof

The utility model discloses an exhaust hood type microwave oven and an air duct system thereof. The exhaust hood type microwave oven comprises a shell and a baffle plate, wherein a cooking chamber and an exhaust passage are arranged in the shell; the exhaust passage is provided with an inlet and an outlet; the inlet of the exhaust passage is formed in a bottom plate of the shell; the baffle plate is arranged below the bottom plate and is opposite to the bottom plate; the baffle plate is separated from the bottom plate so as to form a fume collection cavity between the baffle plate and the bottom plate. The exhaust hood type microwave oven has the advantages of good exhaust effect and improved integral attractive appearance.