Bathing industry in Beijing，represented by hydrotherapy SPAs，bathhouse，and hot-spring clubs，has experienced a rapid development in recent years. Thousands of bathing houses scatter in all districts and counties in Beijing，of which the flagship ones often take up thousands of square meters and even hundreds of thousands of square meters. However，the industry is still slow in water conservation. More work can be done in building a water-efficiency society，since the shortest slab of bathing industry continues to bring bucket effect.