The hot spring provide several functions including sightseeing , leisure amusement and rest, health care, geothermal energy source and agricultural application. For income enhancement and life quality promotion, health care needing, addition to the government impelling the travel policy positively in addition, causes the leisure sightseeing industry vigorous development, has amounted to 20,000,000,000 NT dolls. According to the investigation hot spring industry annual production, thus it may be known Taiwan hot spring industry in people leisure consciousness awakens just like becomes the present service industry the development main axle. The hot spring contains the gas including the hydrogen sulfide, the carbon dioxide, the methane, these gas often when use the hot spring seepage releases, especially the influence is most obvious by the hydrogen sulfide to the health, when domestic, outside has soaks the hot spring inhales excessively many hydrogen sulfide to create the drug case row, if not full well ventilated condition namely will create the oxygen deficit the danger. Therefore, characteristic which of the gas contains regarding the hot spring in and must take the security measure, when hot spring development use must face up to question, this research plans to the domestic hot spring to contain the gas hydrogen sulfide, the possible latent safety and health question to carry on the minute to analyze the discussion, and proposes the improvement countermeasure, is being engaged in the hot spring leisure for the people to provide air of environment the security health, the research results may supply reference of the
hot spring bathroom space plan design.