Protective device for precast pile construction

The utility model discloses a protective device for precast pile construction, which belongs to the technical field of protective devices and comprises a lantern ring, an extension sleeve is fixed at the end of the lantern ring, a water tank is fixed at the included angle of the inner wall of the extension sleeve, a delivery pipe is connected to the end of the water tank, a water pump is mounted in the middle of the delivery pipe, and the end of the delivery pipe penetrates through the extension sleeve. A nozzle is mounted in the middle of the water tank; atomized liquid sprayed by the spray head is used for reducing dust generated during precast pile construction, a large amount of dust is prevented from being generated at the end of a precast pile during precast column construction, an operator is prevented from sucking a large amount of dust, the usability of the device is improved, meanwhile, the surface of the spray head is conveniently shielded, and the situation that the surface of the spray head is fu