The invention relates to a device used for a cooling tower, in particular to a screw-pushing water distributing sprayer used for the cooling tower. The device is provided with a water-spraying port, and a rotary spiral impeller is suspended under the water-spraying port to be opposite to the water-spraying port. A gear-shaped water distributing ring is arranged below the spiral impeller, and a disk-shaped water splash plate is also arranged below the water-distributing ring. The existing sprayer used for cooling towers has the problems caused by defects that water flow cannot be evenly distributed when in water distribution; water columns are easy to be formed to flow down when water feeding pressure is lower, which not only reduces the cooling effect but also causes damages to fillings. Compared with the common water-distributing sprayer used for the cooling tower, the screw-pushing water distributing sprayer can greatly enhance the uniformity of water distributing.