The invention belongs to the technical field of roadway dust collection devices, and particularly relates to a roadway deduster. The roadway deduster comprises a dust remover, a base is arranged underthe dust remover, universal wheels supporting the base are arranged under the base, an air inlet of the dust remover is communicated with a circular air duct which comprises a first section air duct,a second section air duct and a third section air duct, one end of the first section air duct is communicated with the air inlet of the dust remover, the other end of the first section air duct is communicated with one end of the second section air duct, the other end of the second section air duct is communicated with one end of the third section air duct, the other end of the third section airduct is communicated with an air inlet cover which is shaped like a funnel, the air inlet cover is formed by connecting multiple arc-shaped plates which are each in a sector shape, first through holesand second through holes are formed in the arc-shaped plates, the first through holes are adjacent to long arc edges of the arc-shaped plates, and the second through holes are adjacent to short arc edges of the arc-shaped plates. The roadway deduster is convenient to use and easy to clean.