The　MAPP,　as　a　derivative　of　ammonium　polyphosphate　(APP),　was　synthesized　via　a　grafting　reaction　between　APP　and　ethylenediamine　(EDA).　The　intumescent　flame-retardant　was　fabricated　by　the　mixture　of　MAPP,　EG,　and　WF,　and　introduced　into　the　EVA　matrix　for　the　preparation　of　flame-retardant　EVA　foamed　composites.　The　FT-IR,　XRD,　1H　NMR,　LOI,　UL-94,　CONE,　SEM,　TG,　and　electronic　universal　testing　machine　were　applied　to　appraise　the　grafting　degree,　flame-retardant,　and　mechanical　performance　of　the　as-obtained　composites,　respectively.　The　results　showed　that　the　EDA　has　been　successfully　grafted　on　APP,　and　the　as-prepared　MAPP　could　not　only　possess　desirable　flame-retardant　performance,　water-resistance,　as　well　as　a　better　compatibility　with　EVA　matrix,　but　also　decrease　the　heat　release.　It　is　worth　noting　that　foamed　composite　obtained　the　optimum　comprehensive　properties　when　the　MAPP　loading　was　20%,　and　exhibited　28.8%　(LOI),　V-0　(UL-94),　1.282　MPa　(tensile　strength),　and　326.40%　(elongation),　respectively.　©　All　Right　Reserved.