The invention discloses a cleaning device for a sidewalk road and a using method thereof. The cleaning device comprises an outer frame, wherein the outer frame comprises left and right portions, and an extending groove is formed in the inner side of the outer frame; an extension plate is fixedly connected to one side of the inner wall of the extending groove through a first spring, and side platesare fixedly connected to both sides of one end of the bottom of the outer frame and the extension plate; slideways are formed in the inner sides of the side plates, and rotating rods are slidably connected between the inner walls of the slideways; connecting blocks are arranged on the middle positions of the outer sides of the rotating rods in a sleeved mode, and the outer frame and the extensionplate are fixedly connected to the tops of the connecting blocks through oil cylinders; and cleaning brushes are fixedly connected to the outer sides of the rotating rods, and cleaning motors are fixedly connected to the bottoms of the outer frame and the extension plate. The invention relates to the technical field of cleaning equipment. According to the cleaning device for the sidewalk road andthe using method thereof, dust can be prevented from being raised and affecting pedestrians coming and going during the cleaning process, and the pedestrians can be avoided effectively in the cleaning process.