With the development of plantation forestry, poplar tree has become one of the most useful plantion species for the composite biomaterials in China. Therefore, the thermal release behavior of poplar composite biomaterial under high temperature was studied by TD-GC/MS in order to reveal environmental protective performance. The results were: (1) The main constituents of thermal release volatiles at 90 °C were acetic acid (81.45%), furfural (2.66%), cedrol (1.7%), formic acid (1.67%), benzenemethanamine, N-hydroxy-N-(p henylmethyl)-(1.42%), 2-pr...