测定了二氧化氯对１０种甲鱼致病菌在营养肉汤中的最小抑菌浓度（ＭＩＣ）和在池塘水中的最小杀菌浓度（ＭＢＣ）。结果表明：二氧化氯在肉汤中对病原菌有一定抑菌效果，对其中６种菌的ＭＩＣ小于２５μｇ／ｍｌ；二氧化氯在池塘水中的杀菌效果较理想，对其中７种致病菌的ＭＢＣ小于６．２５μｇ／ｍｌ；以作用３０ｍｉｎ杀菌效果最佳。二氧化氯用于甲鱼病害防治是一种较有前途的药物。 The minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of chlorine dioxide in 10 kinds of turtle pathogens in nutrient broth were determined. The results showed that: chlorine dioxide in the broth of the pathogenic bacteria have some antibacterial effect, of which 6 kinds of bacteria MIC less than 25μg / ml; chlorine dioxide in pond water disinfection effect is ideal, of which 7 kinds of pathogenic bacteria MBC less than 6.25μg / ml; the role of 30min sterilization best. Chlorine dioxide for turtle disease prevention and treatment is a more promising drug.