The invention discloses an energy-saving kiln spray gun. The energy-saving kiln spray gun comprises a kiln spray gun nozzle, wherein a spray head protection mechanism is fixedly arranged on the outersurface of the kiln spray gun nozzle, spray pipe mechanisms are fixedly arranged on the outer surfaces of the two ends of the kiln spray gun nozzle, the outer surface of one side of the kiln spray gunnozzle is fixedly connected with a fixing lantern ring, the outer surface of the front end of the fixing lantern ring is fixedly connected with a standby ignition gun, the outer surface of one side of the fixing lantern ring is fixedly connected with a combustion cabin, a fixing mechanism is fixedly installed on the outer surface of the middle of the front end of the combustion chamber, the outersurface of the upper end of the combustion chamber is fixedly provided with a spray gun valve tube, and the outer surface of the spray gun valve tube is fixedly connected with an air leakage prevention mechanism. According to the energy-saving kiln spray gun, by means of the anti-air-leakage mechanism, gas leakage can be well prevented; through the spray pipe mechanisms, the spray head can be automatically adjusted to be sprayed out from that direction; and the spray head protection mechanism is adopted, so that people can conveniently dismount and clean internal black scale, and the kiln spray gun device is more complete.