本研究主要的目的是應用新型二氧化氯消毒劑提升室內游泳池場所環境品質；其方法分三階段來進行：(1)進行整個游泳池場所環境採樣，(2)進行微生物培養與分析，(3)蒸氣室生物氣膠殺菌效率評估。結果發現，室內游泳館池水若無適量的消毒劑殘留，水中的總生菌數檢測項目常超出標準範圍；由於室內游泳館空間大多寬敞、通風，所以其生物氣膠含量低，無需再進行額外消毒工作。另外，蒸氣室中生物氣膠含量高達19296CFU/m3，經噴灑二氧化氯消毒劑後，殺菌率達96.5％。因此，二氧化氯消毒劑對生物氣膠的殺菌效能可達到空氣品質之要求，足可供游泳池業者消毒時之參考。 The aim of this study was to apply chlorine dioxide in a indoor swimming pool for evaluating its disinfection efficiency. Therefore, this studying methods were divided into three steps to proceed: (1) environmental sampling in the whole swimming pool environment, (2) microorganism culture and analysis, and (3) evaluation of disinfection efficiency in vapor room. Results indicate that if there is no proper amount of chlorine dioxide remaining left in swimming pool, the total viable counts can not meet the regulation requirement. For the air quality, it is unnecessary to do any furthermore disinfection because the space is enough for ventilation. In the vapor room, the measured counts of bioaerosols was 19296 CFU/m3L. After using a spraying method with chlorine dioxide for disinfection, the efficiency of disinfection can be obtained as high as 96.5%. Consequently, chlorine dioxide can be applied for promoting the environmental quality of indoor swimming pool to comply with the regulations.