Abstract: The torrefaction experiments were carried out using two typical wood-based panel wastes:Plywood（PW）and Fiberboard（FB）. The influences of torrefaction on chemical structure and fuel property of wood-based panel wastes were researched using the analytical characterization by combining with the element,calorific value,Fourier transform infrared spectroscopy（FTIR）,twodimensional correlation infrared spectroscopy（2 D-PCIS）and X-ray photoelectron spectroscopy（XPS）. The results show that the chemical structure of PW and FB do not change a lot at 200 ℃ even at 250 ℃,but at 300 ℃,significant changes will occur. With the increase of torrefaction temperature,the low-energy states of“ —C—H/—C—O/—C==O”change into the high-energy states of“aromatic —C—C/—C==C”,and the calorific value of torrefied solid increases significantly. Simultaneously,at 300 ℃,PW and FB obtain the maximum denitrogenation rate,which is 75.04 % and 72.48 %,respectively.