This　paper　has　investigated　the　effect　of　hole　shape,　hole　size　and　hole　position　on　elastic　buckling　of　square　perforated　plates　by　using　the　finite　element　method.　According　to　the　effect　law　of　these　three　geometric　factors　on　buckling　bearing　capacity,　buckling　coefficient　was　obtained　by　data　fitting.　The　results　show　that:　The　plate　with　circular　perforation　has　the　greatest　buckling　bearing　capacity　of　the　three　perforation　shape　plate;　When　the　center　perforations　have　the　same　area,　the　relationship　between　buckling　coefficient　and　perforation　size　is　exponential　for　the　plate　with　circular　hole　or　square　hole,　the　relationship　between　buckling　coefficient　and　perforation　size　is　biquadratic　for　the　plate　with　triangular　hole　and　the　greater　the　perforation　size　is,　the　less　the　buckling　bearing　capacity　will　be;　For　the　plate　with　uniform　circular　perforation　size,　The　relationship　of　buckling　coefficient　and　the　spacing　between　perforation　center　and　structure　center　is　quadratic　and　the　greater　the　spacing　is,　the　less　the　buckling　bearing　capacity　will　be.　The　results　in　this　paper　provide　reference　for　perforation　design　of　plate.　©　(2014)　Trans　Tech　Publications,　Switzerland.