The build-up properties,color fastness and the dyeing rate curve of different disperse dye systems were studied,including light trichromatic system,medium-dark trichromatic system and auxiliary color system.The results showed that:the optimal dosage of light trichromatic system was less than 0.5%for Red AQ-LE,Yellow AQ-LE and Blue AQ-LE;the optimal dosage of medium-dark tri-chromatic system were less than 3%for Deep Red XFN,Brilliant Yellow XFN and Yellow-Brown XFN,less than 5%for Navy XFN-R,less than 2%for Golden Yellow XFN;the optimal dosage of auxiliary color system were less than 5%for Turquoise XFN,Black XFN-RSD,less than 2%for Cyanine XFN.In order to ensure the level-dyeing property,the temperature-control range of the light tri-chromatic system was 60~100℃;the temperature-control range of the rest dyes was 110~130℃.