The utility model discloses a rock tunneling spray blocking associated dust prevention and dust settling device. An arched high pressure water pipe is arranged along the roadway arched roof, and a row of sprayers for spraying water towards inner side and outer side of the roadway are uniformly arranged on the high pressure water pipe; an iron wire is drawn between the arched points at two sides of the roadway, a folio compact dust prevention net is hung on the iron wire by a hanging ring, the folio part of the folio compact dust prevention net is locked by a buckle, the roadway arched section is further provided with an arched compact dust prevention net for sealing. When in use, a water curtain switch is turned on, the oppositely pulling compact dust prevention net is hung, spraying dust prevention and dust prevention net dust settling effect at the same time, a high pressure spraying device forms water curtain barriers in front and behind the net, a layer of net in the middle absorbs the dust and plays a role in dust settling, the first water curtain layer plays a role in dust prevention, the second compact net layer plays a role in dust prevention and dust settling, the third water curtain layer plays a role in dust removal, the dust prevention measures are distributed in the whole roadway section, thus, a three-layer spatial three-dimensional dust prevention and dust settling effect is realized.