Abstract: The platinum-palladium/activated carbon catalyst was prepared by means of impregnation-chemical reduction process.The XRD,XPS,BET,and AFM were used to analysize the catalyst.The catalytic activity and the cooperation between platinum and palladium were investigated via hydrosilylation reaction.In addition,the optimum application conditions of the catalyst were determined in this work.The results showed that the cooperation could promote the catalytic reaction when the weight ratio of Pt/Pd was equal to 1∶2;the proper content of the catalyst was 5%,and the molar ratio of vinyl group to Si-H group should be controlled in the range of 1.5—1 so that the liquid rubber could be curing completely under the room temperature.