The synergistic effect of mixed surfactants and the relationship between the properties and the wetting, waterproof, dispersion and levelling dye were discussed briefly with the dyeing and printing auxiliary as example. 以新合纤印染助剂为例,着重讨论不同类别的表面活性剂相互复配后的增效作用,以及表面活性剂复配物的表面特性与润湿、拒水、分散、匀染等应用性能之间关系。