The　Ag　coating　was　deposited　on　the　surface　of　Al-Ag　alloy　powder　by　electroless　plating　process.　10　wt%　of　AgNO3　was　put　in　the　powder　for　precursor　replacement　reaction,　and　then　added　the　powder　into　electroless　plating　bath　which　contained　glucose　solution,　solution　of　silver　ammonia,　thiourea　solution,　tartaric　acid　solution　and　absolute　ethanol.　The　effects　of　formula　components　were　analyzed.　The　surface　morphology　of　the　prepared　composite　particles　was　studied　with　SEM　and　their　chemical　compositions　were　confirmed　by　XRD.　With　the　chemical　etching　method,　silver　content　of　the　powder　was　determined.　The　studies　have　shown　that　an　uniform,　complete　and　dense　silver　coating　for　the　Al-Ag　composite　powders　was　generated　by　this　method,　with　the　silver　content　being　20wt%　and　the　conductivity　was　favorable.　©　(2013)　Trans　Tech　Publications,　Switzerland.