The invention relates to a down-draught type range hood, which comprises a cabinet, a fan system arranged in the cabinet, a fume collection chamber vertically arranged on the tabletop of the cabinet and a filter unit obliquely arranged in the fume collection chamber, wherein the filter unit comprises at least two layers of filter plates which are provided with a plurality of air vents; the air vents on two adjacent layers of filter plates are distributed in a misaligned manner; a turnup is formed around each air vent; the fan system comprises a fan, a fume exhaust pipe and static fume adsorption equipment; the fume collection chamber is communicated with the inlet of the fan; the inlet of the fume exhaust pipe is connected with the outlet of the fan; and the outlet of the fume exhaust pipe is connected with the inlet of the static fume absorption equipment. Compared with the prior art, the range hood has better fume filtration effect and less air flow loss, can further purify exhausted fume and ensure the air exhausted into the outside meet the requirements of fume exhaust standards of food industry.