PROBLEM TO BE SOLVED: To provide the toilet deodorant sterilizer that can immediately deodorize an odor generated from a start of defecation in the toilet when a person defecates, before spreading to an entire toilet room, and can sterilize a toilet seat or the like directly touched by a human skin after the defecation.SOLUTION: Preferably, hypochlorous acid water is ultrasonic-sprayed horizontally from a gap between a toilet and a toilet seat during defecation without using a fan to fill an interior of the toilet with a mist of a deodorant sterilizing solution. Further, a sealing stopper, a micro vacuum pump, a solenoid valve or a liquid pump is provided in order to eliminate liquid leakage from an ultrasonic-spraying part when spraying is stopped.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】 人の排便時に、便器内に排便開始時から発生する臭気が、トイレ室全体に拡散する前に即座に消すと共に、排便後には、人肌が直接に触れる便座等を殺菌する事を課題とする。【解決手段】 好ましくは次亜塩素酸水を、排便中に便器と便座の隙間から、ファンを用いることなく、水平に超音波噴霧して便器内を消臭殺菌液の霧で満たす。そして、噴霧休止時の超音波噴霧部からの液漏れを無くす為に、密閉栓、或はマイクロ真空ポンプ、或は電磁弁、或は液体ポンプを設ける。【選択図】図2