In　this　paper,　an　analytical　method　is　presented　for　3-D　(three-dimensional)　researches　of　laminated　composite　plates.　Using　this　method,　the　linear　and　nonlinear　analytical　3-D　solutions　of　high　accuracy　are　obtained　for　circular　laminated　composite　plates　with　rigidly　clamped　edges　and　under　uniform　transverse　loading.　Galerkin＇s　method　and　the　perturbation　technique　are　used　to　obtain　the　solutions　which　satisfy　the　basic　differential　equations　of　linear　and　nonlinear　3-D　problems.　The　geometric　nonlinearity　from　a　moderately　large　deflection　is　considered.　Many　numerical　results　of　displacements　and　stresses　are　shown　in　figures.　In　the　analytical　method,　there　are　not　any　restrictions　regrading　the　stacking　sequence　of　laminated　composite　plates,　so　the　method　may　be　used　to　analyze　the　3-D　problems　of　unsymmetrical　laminated　plates.