In　this　paper,　the　topology　optimization　model　for　continuum　structures　was　developed　based　on　the　ICM　(Independent　Continuous　Mapping)　method.　The　objective　function　of　this　model　is　the　minimized　weight,　which　is　subjected　to　both　the　buckling　constraints　and　stress　constraints.　Using　continuous　independent　topological　variables,　adopting　Taylor　expansion　and　the　filtering　function,　the　objective　function　was　expressed　approximately　as　a　second-order　expression.　Based　on　the　Rayleigh　quotient,　Taylor　expansion　and　the　filtering　function,　the　buckling　constraints　were　expressed　approximately　and　explicitly.　Using　the　globalization　method　of　stress　constraints　and　the　von　Mises＇　yield　criterion,　the　local　stress　constraints　were　converted　into　strain　energy　constraints　of　the　whole　structure.　Thus,　the　sensitivity　analysis　was　facilitated.　The　optimization　model　was　converted　to　be　a　dual　problem,　and　then　solved　by　the　sequence　second-order　programming.　Thus,　the　number　of　the　variable　was　reduced　and　the　model＇s　scale　was　minified.　Numerical　examples　show　that　this　method　can　solve　the　topology　optimization　problem　of　continuum　structures　with　both　the　buckling　and　displacement　constraints　efficiently　and　give　more　reasonable　structural　topologies.