PROBLEM TO BE SOLVED: To prevent invasion of disease germs through a doorway and to protect plants from disease germs by a disinfection system for a greenhouse for plant production.SOLUTION: A person (99) entering the greenhouse is disinfected by applying direct current voltage to a discharge part (62), generating hydrogen peroxide by streamer discharge occurring under water within a water storage part (61), and feeding disinfection water containing hydrogen peroxide to the doorway (13) side of the greenhouse (10) for plant production from a feeding part (50).【課題】植物生産用ハウスの消毒装置により、出入口からの病原菌の侵入を防止して植物を病原菌から防ぐ。【解決手段】放電部（62）に直流電圧を印加し、水貯留部（61）内の水中でストリーマ放電を行って過酸化水素を発生させ、供給部（50）により過酸化水素を含む消毒水を植物生産用ハウス（10）の出入口（13）側へ供給し、入室者（99）の消毒を行う。【選択図】図１
