Intumescent　flame　retardant　thermoplastic　starch　(TPS)　as　char　forming　agent,　ammonium　polyphosphate　(APP)　and　expandable　graphite　(EG)　were　used　to　prepare　thermoplastic　starch/ethylene-vinyl　acetate　copolymer　(TPS/EVA)　foam　composites　by　melt　mixing,　mill　plasticizing　and　sulfuration　foaming.　The　effect　of　thermoplastic　starch　content　on　the　flame　retardant,　mechanical　and　processing　properties　of　TPS/EVA　foam　composites　was　investigated.　With　the　introduction　of　char　forming　agent　TPS,　flame　retardancy　and　charring　of　TPS/EVA　foam　composites　could　be　significantly　improved.　With　increasing　TPS　content,　tensile　strength,　elongation　at　break　and　tearing　strength　of　TPS/EVA　foam　composites　showed　a　downward　trend　after　firstly　rising　and　specific　gravity　showed　a　modest　rise.　The　TPS/EVA　foam　composites　had　best　comprehensive　properties　at　the　loading　of　6%TPS,　i.e.　LOI　26.5%,　UL-94　V-0　rating,　tensile　strength,　elongation　at　break,　tearing　strength　and　specific　gravity　2.395　MPa,　177.48%,　10.59　Nmm-1,　0.21452,　respectively.　©,　2015,　Chemical　Industry　Press.　All　right　reserved.