Based　on　ICM　method,　an　approximately　explicit　topological　optimization　model　of　plate-and　shell-like　structures　is　established　to　minimize　the　weight　with　displacement　constraints　under　multi-state　loadings.　The　model　is　solved　by　SQP　(sequential　quadratic　programming)　algorithm　using　exact　dual　mapping　and　the　optimal　topology　is　obtained　finally.　Several　numerical　examples　show　that:　(1)　ICM　method　is　effective　in　dealing　with　the　topological　optimization　of　plate-and　shell-like　structures　under　multi-state　loadings,　which　possesses　the　advantages　of　fast　convergence　and　good　stability;　(2)　both　boundary　conditions　and　displacement　constraint　values　can　produce　influence　on　the　results　of　structural　topology　optimization;　(3)　the　force-transfer　path　in　multi-state　loadings　is　not　a　simple　superposition　of　those　in　each　single-state　loading.