The　novel　luminescent　hybrid　bimodal　mesoporous　silicas　(LHMS)　with　1,　8-naphthalic　anhydride　(NA)　as　the　fluorescence　materials　were　synthesized　through　post-synthesis　route　and　grafting　method.　The　resulting　materials　were　characterized　by　XRD,　TEM,　N-2　adsorption-desorption　isotherms　and　FT-IR.　Particularly,　thermal　degradation　behavior　and　kinetic　properties　of　LHMS　were　investigated　in　detail　by　using　thermogravimetric　analyzer　(TGA)　at　different　heating　rates　in　flowing　N-2　TG　experiments　were　performed　to　elucidate　their　thermal　properties　and　the　degradation　behaviors.　Meanwhile,　using　Kissinger　and　Flynn-Wall-Ozawa　principles,　the　apparent　activation　energies　were　calculated　and　the　thermal　decomposition　mechanism　of　the　grafting　process　was　put　forward　on　the　basis　of　the　Coats-Redfern　method.