PROBLEM TO BE SOLVED: To provide a spray device which is capable of producing a large amount of fine particles having a fine particle size capable of causing Brownian motion and which is convenient to use. A spraying device of the present invention includes an atomization tank capable of storing a liquid agent, an atomization device for atomizing the liquid agent in the atomization tank to generate fine particles, and a carrier air for conveying the fine particles of the liquid agent. Atomization unit 10 that includes a blower 13 that generates air, a tank unit 20 that is disposed above the atomization tank and that supplies the liquid agent to the atomization tank, and the fine particles that are generated by the atomization unit are blown out together with the carrier air. The blowing unit 30 and the top member 63 disposed above the tank unit are provided. The top member 63 installs the blowing unit 30 on the top surface, and the top surface recess 63c formed downward from the top surface. And a door portion 63d capable of opening and closing to cover the top surface recess, and a liquid agent supply port 63e communicating with the tank unit 20 is formed in the top surface recess 63c. [Selection diagram] Fig. 5E【課題】ブラウン運動を起こすことができる程度の微細な粒径を有する微粒子を大量に生成することが可能で、かつ、使い勝手の良い噴霧装置噴霧装置を提供する。【解決手段】本発明の噴霧装置は、液剤を貯留可能な霧化タンク11と、霧化タンク内で液剤を霧化して微粒子を生成する霧化デバイス12と、液剤の微粒子を搬送する搬送エアを発生させる送風機13とを備える霧化ユニット10と、霧化タンクの上方に配設され、霧化タンクに液剤を供給するタンクユニット20と、霧化ユニットで生成された微粒子を搬送エアとともに吹き出す吹き出しユニット30と、タンクユニットの上方に配設されるトップ部材63を備え、トップ部材63は、天面に吹き出しユニット30を設置するとともに、天面から下方に向けて形成される天面凹部63cと天面凹部を覆う開閉可能な扉部63dとを備え、タンクユニット20と連通する液剤補給口63eが天面凹部63cに形成される。【選択図】図5E