Dust fall drilling system and method for highway construction

The invention discloses a dust fall drilling system and method for highway construction, the dust fall drilling system comprises a shell and a drill bit, the interior of the shell is fixedly connected with a mounting plate, and the lower side of a high-pressure water tank is provided with a cleaning mechanism for cleaning the drill bit; a collecting assembly for collecting stone is arranged on the lower side of the interior of the shell. According to the device, a cleaning mechanism is arranged to clean a drill bit, a second rotating wheel drives a rotating plate and a matching disc to rotate through a driving shaft, the rotating plate controls an intermittent wheel to intermittently rotate under the action of a driving block and a driving groove, and the inner wall of the shell is cleaned through a cleaning assembly; compared with an existing device, the device has the advantages that dust pollution caused by flying of a large amount of dust can be prevented, the drilling effect can be guaranteed by cleaning