Through　in-situ　reduction　method,　Ag　nanoparticles　were　loaded　on　the　surfaces　of　EVA　composite　foams.　A　series　of　investigations,　including　field　emission　scanning　electron　microscopy,　X-ray　photoelectron　spectroscopy　and　X-ray　diffraction,　were　carried　out　to　characterize　the　samples.　Thermal　stability　and　antibacterial　properties　of　the　products　were　evaluated　by　thermo　gravimetric　analysis　and　antibacterial　test,　respectively.　Results　show　that　nanoparticles,　with　an　average　particle　size　of　20nm,　are　elemental　silver　and　decorated　on　the　surface　of　EVA　composite　foams　in　uniform　and　regular　stacks;　after　the　presence　of　Ag　nanoparticles,　char　yield　of　the　products　at　600　could　increase　to　3.22%;　the　samples　have　good　persistent　antibacterial　effects　and　after　50　washing　cycles,　the　antibacterial　rate　reaches　above　98%　and　99%　against　escherichia　coli　and　staphylococcus　aureus,　respectively.　©　2016,　Journal　of　Materials　Engineering.　All　right　reserved.