The invention discloses an automatic spraying and dust inhibiting apparatus capable of being rapidly disassembled and assembled and rotating, and relates to the technical field of material bin transportation, wherein the apparatus comprises: a fixed support pipe, a flange disc, a ball head, an induction probe, a rotary bushing, a rotary handle, a locking screw, a nut, a rotary handle bushing, a lifting hollow screw rod, a ball head top plate, a top plate small hole, lubricating oil, a lifting lug, a spraying support beam, a counterweight box, a spraying pipe, a spraying nozzle high-pressure hose, a quick change joint, a water inlet pipe, a water pump and a water box. According to the present invention, the apparatus effectively inhibits the dust flying condition during the material unloading of the vehicle, and eliminates the harm of the flying dust to the equipment and the personnel; the spraying device can be quickly disassembled and assembled, and flexibly rotates without blocking;through the rotation of the hollow screw rod, the height of the spraying nozzle can be adjusted to adapt to various types of vehicles; and the induction probe monitors the vehicle, and the water spraying and dust inhibiting is performed during the material unloading of the vehicle so as to achieve the effects of energy saving and consumption reducing.