Aiming　at　improving　reaction　selectivity　of　zeolite　Beta-catalyzed　isomerization　of　normal　alkane,　we　reported　a　facile　but　efficient　route　to　prepare　the　Beta@SBA-15　composite　supports　with　low　surface　diffusion　barriers　in　isomers　formation　from　normal　alkane.　Microporous　Beta　zeolite　and　mesoporous　SBA-15　zeolite　were　physically　mixed　and　milled　by　high-energy　planetary　ball-mill.　The　addition　of　SBA-15　and　milling,　which　have　little　effect　on　the　acid　properties　of　Beta　zeolites,　disaggregate　the　Beta　particles　and　anchor　the　Beta　nanocrystals　on　the　surface　of　SBA-15　mesostructure.　The　apparent　diffusivities　of　2-methyl　pentane　measured　by　zero-length　column　method　increased　by　50%.　n-Hexane　isomerization　tests　show　that　the　Pt/Beta@SBA-15　catalysts　exhibit　much　higher　selectivity　to　isomers,　especially　the　dibranched　isomers　and　lower　selectivity　to　cracking　reaction,　owning　to　the　reduced　transport　limitation　of　composite　supports.