In the process of traditional electroless plating of fabric，activation and sensitization in two steps are needed to form the catalyst，palladium，on the surface of fabric，leading to complex technology，difficulty in quality control of fabric and consumption of a great deal of tin（Ⅱ）chloride and acid.In this paper，polyvinyl pyrrolidone（PVP）-Pd colloid activation in one step substituted the activation and sensitization in two steps in traditional electroless plating.The preparation technology of PVP-Pd colloid was investigated with UV spectra.The dispersivity of PVP-Pd colloid was studied with transmission electron microscopy（TEM），and the surface morphology of fabric was observed with scanning electron microscopy（SEM）.The experimental results showed that PVP-Pd colloid had perfect dispersivity and could be applied to electroless plating successfully，to optimize the technology，reduce cost and obtaining the nickel plated fabric with excellent electrical conductivity and electromagnetic shielding performance.