The volatiles release behavior of poplar powder has been studied by TD-GC/MS online technique at different temperatures.The results show that the proportion of main harmful components was higher than that of beneficial in the volatiles of poplar powder at 40℃ and 90℃,the harmful components was 1.7 times higher than beneficial components. The proportions of main beneficial and harmful components were equivalent at 60℃,while the main beneficial components was 5.42 times higher than that of harmful.Taking poplar wood powder as substrate to prepare wood powder-based composites by high-pressure no-gel molding compaction between the temperature of lignin softening point and wood materials carbonization(about 150-180℃) can present a satisfactory environmental friendliness. The volatiles release behavior of poplar powder has been studied by TD-GC / MS online technique at different temperatures. The results show that the proportion of main harmful components was higher than that of beneficial in the volatiles of poplar powder at 40 ° C and 90 ° C , the harmful components was 1.7 times higher than beneficial components. The proportions of main beneficial and harmful components were equivalent at 60 ℃, while the main beneficial components was 5.42 times higher than that of harmful. Tipping poplar wood powder as substrate to prepare wood powder -based composites by high-pressure no-gel molding compaction between the temperature of lignin softening point and wood materials carbonization (about 150-180 ° C) can present a satisfactory environmental friendliness.