The CO2 laser surgery has been used to treat allergic rhinitis. We used the new hand piece developed by us for vaporized with certainty, and obtained some results of subjective and objective improvement. The subjects had perennial antigens and showed no improvement after conservative treatment. 77% of the patients obtained exellent results, who were seen at regular intervals up to 12 months after the surgery. No complication and easy technique are the benefits of this method. We consider the laser surgery using the new hand piece developed by us to be one of the most valuable treatment for allergic rhinitis.