In order to learn of pyrolytic behavior of bagasse multifunctional materials, the extractives of bagasse biomass were adsorbed and determined by Py-GC-MS. And the main constituents were 1-phenanthrenecarboxylic acid,1,2,3,4,4a,9,10,10a-octahydro-1,4a-di methyl-7-(1-methylethyl)-( 37.99%), decanoic acid, 1,2,3-propanetriyl ester(5.73%), tridecane, 2-methyl-(5.09%), dodecanoic acid, 1-(hydroxymethyl) -1,2-ethanediyl ester(4.52%), stigmastan-3,5-diene(3.81%), glycine, furan-2-yl-methyl ester(3.45%), 1-hexacosene(2.18%), 1-docosene(2.08%)...