In　this　paper,　thermal　buckling　properties　of　a　nanoplate　with　small-scale　effects　are　studied.　Based　on　the　nonlocal　continuum　theory,　critical　temperatures　for　the　nonlocal　Kirchhoff　and　Mindlin　plate　theories　are　derived.　The　thermal　buckling　characteristics　are　presented　with　different　models.　The　influences　of　the　scale　coefficients,　half-wave　numbers,　width　ratios,　and　the　ratios　of　the　width　to　the　thickness　are　discussed.　From　this　work,　it　can　be　observed　that　the　small-scale　effects　are　significant　for　the　thermal　buckling　properties.　Both　the　half-wave　number　and　width　ratio　have　influence.　The　nonlocal　Kirchhoff　plate　theory　is　valid　for　the　thin　nanoplate,　and　the　nonlocal　Mindlin　plate　theory　is　more　appropriate　for　simulating　the　mechanical　behaviors　of　the　thick　nanoplate.