Material　and　structure　made　by　additive　manufacturing(AM)have　received　much　attention　lately　due　to　their　flexibility　and　ability　to　customize　complex　structures.This　study　first　implements　multiple　objective　topology　optimization　simulations　based　on　a　projectile　perforation　model,and　a　new　topo-logic　projectile　is　obtained.Then　two　types　of　316L　stainless　steel　projectiles(the　solid　and　the　topology)are　printed　in　a　selective　laser　melt(SLM)machine　to　evaluate　the　penetration　performance　of　the　projectiles　by　the　ballistic　test.The　experiment　results　show　that　the　dimensionless　specific　kinetic　energy　value　of　topologic　projectiles　is　higher　than　that　of　solid　projectiles,indicating　the　better　pene-tration　ability　of　the　topologic　projectiles.Finally,microscopic　studies(scanning　electron　microscope　and　X-ray　micro-CT)are　performed　on　the　remaining　projectiles　to　investigate　the　failure　mechanism　of　the　internal　structure　of　the　topologic　projectiles.An　explicit　dynamics　simulation　was　also　performed,and　the　failure　locations　of　the　residual　topologic　projectiles　were　in　good　agreement　with　the　experimental　results,which　can　better　guide　the　design　of　new　projectiles　combining　AM　and　topology　optimization　in　the　future.