PROBLEM TO BE SOLVED: To efficiently generate ultrafine particles of hypochlorous acid water even in a large-capacity aquarium container, and to spray a large amount over a wide area for a long time, and to provide a large-area indoor space. Provided is a jig hypochlorous acid water spraying device that facilitates transportation in a jig. SOLUTION: The hypochlorous acid water 9 stored in a water tank container 2 storing the hypochlorous acid water 9 is atomized into ultrafine particles by ultrasonic vibration, and is sprayed through a nozzle 6, whereby the interior of a room including a vinyl house is A hypochlorous acid water spraying device 1 for sterilizing and deodorizing an atmosphere, comprising: an ultrasonic vibrator 4a disposed in the bottom of a tray container in the hypochlorous acid water 9 of the water tank container 2. The fine atomization generator 4 is immersed and suspended. [Selection diagram] Figure 1【課題】大容量の水槽容器であっても、次亜塩素酸水の超微粒子を効率良く発生させることができ、しかも大量に且つ長時間にわたって広範囲に散布することができ、また広面積の室内での搬送が容易となる治具次亜塩素酸水噴霧装置を提供する。【解決手段】次亜塩素酸水9を貯蔵した水槽容器2内の当該次亜塩素酸水9を超音波振動によって超微細霧化し、ノズル6を介して噴霧することによりビニルハウスを含む室内の雰囲気の除菌消臭を行う次亜塩素酸水噴霧装置1であって、前記水槽容器2の次亜塩素酸水9内に、トレー容器の底面に超音波振動子4aを配してなる超微細霧化発生装置4を浸漬浮遊させてなる。【選択図】図1