The colour fastnesses and physical properties of artificial suede treated with fixing agents have been studied. The first N/T microfibre nonwoven fabric was dyed with acid and disperse mixed dyes, then aftertreated with fixing agents and padded with water-based polyurethane, finally through suedings made the fabrics into suede leather. The effects of fixing agent types, concentrations, temperatures and time on physical properties and colour fastness of disperse dyeings for suede would be widely investigated.