This　paper　investigates　the　thermal　vibration　and　buckling　of　the　functionally　graded　carbon　nanotube　reinforced　composite　(FG-CNTRC)　quadrilateral　plate　using　the　meshless　method.　Four　distributions　of　the　reinforcements　along　the　thickness　direction　are　considered,　which　are　the　uniform　distributions　(UD),　FG-V,　FG-O　and　FG-X.　The　corresponding　effective　material　properties　including　Young＇s　modulus,　mass　density,　Poisson＇s　ratio　and　thermal　expansion　coefficients　are　estimated　by　the　rule　of　mixture　with　the　CNT　efficiency　parameters　accounting　for　the　size-dependence.　The　first-order　shear　deformation　theory　(FSDT)　with　the　consideration　of　thermal　effects　is　employed.　Based　on　Hamilton＇s　principle　and　the　moving　least　square　(MLS)　approximation,　the　discrete　governing　equations　for　the　vibration　of　the　FG-CNTRC　plate　are　derived.　The　free　vibration　of　the　regular　and　irregular　plates　with　and　without　the　temperature　effect　are　considered　respectively,　and　the　corresponding　natural　frequencies　and　mode　shapes　are　obtained　by　the　eigenvalue　problem.　The　stability　analysis　of　the　uniaxial　and　biaxial　mechanical　and　thermal　buckling　are　also　conducted　subsequently.　The　effects　of　the　volume　fraction,　distribution　pattern,　geometrical　characteristics　and　temperature　on　the　buckling　behaviors　of　the　CNTRC　quadrilateral　plate　are　discussed　in　detail.　©　2020　Elsevier　Masson　SAS