Abstract:This article is based on the possibility study of dye and dye wastewater decoloration using chlorine dioxide , the relevant influential factors for decoloration rate , such as temperature , revolving speed,mole ratio, pH , initial concentration,and reaction time ,were determined. The results indicated that the preferred condition for chlorine dioxide in acid blue dye is that reaction temperature 25 ℃, revolving speed 100r/min, the mole ratio of acid blue dye and chlorine dioxide 1:100, pH 8, reaction time 10 minutes.The preferred condition for chlorine dioxide in wastewater treatment of dyeing is that reaction temperature 25 ℃ (normal temperature), reaction time 20 minutes , pH 12.The result shows that the technology of ClO2 has the characteristics of simple, convenient for operation, low cost and high efficiency. It is suggested that great efforts should be made to increase the production and application of chlorine dioxide.