The utility model relates to spraying equipment, in particular to a head shaking device of the spraying equipment. A nozzle is fixed on a nozzle base which is hinged with the spraying equipment through a shaft hole; a sliding groove is arranged on the nozzle base; a hinge shaft is embedded in the sliding groove and is fixed on a rotating disc; and the rotating disc is driven by a driving shaft of a main transmission mechanism. The head shaking device can realize automatic spraying, does not lead to dead angles and has high efficiency.