Cleaner for motor vehicle detection

The utility model discloses a cleaner for motor vehicle detection, and belongs to the technical field of motor vehicle detection. Comprising a gun body and a spray pipe, a pipe diameter changing piece is arranged at the end, away from the gun body, of the spray pipe and comprises a connecting base, the center end of the connecting base is rotationally connected to the spray pipe through a fixing piece, and a first spray head, a second spray head and a third spray head which are used for being communicated with the spray pipe are arranged on the connecting base. The inner diameter of the first nozzle is gradually decreased in the direction away from the spray pipe, the inner diameter of the second nozzle is the same as that of the spray pipe, and the inner diameter of the third nozzle is gradually increased in the direction away from the spray pipe. According to the utility model, when working personnel face motor vehicle detection work under different conditions, different pipe diameter changing pieces can be