The pyrolysis and combustion characteristics of printed circuit boards(PCBs) and waste bumper have been studied by using thermogravimetry(TG), gas chromatograph-mass spectrometry(GC-MS) and fourier transform infrared spectroscope(FT-IR). To obtain the information on the kinetic parameters of thermal decomposition of PCBs and waste bumper, the dynamic thermogravimetric analysis curve and its derivative have been analyzed by Flynn-Wall, Coats-Redfern and Ozawa methods. From the kinetic analysis, the apparent activation energies of waste bumper in air atmosphere are lower than those in nitrogen atmosphere while the apparent activation energies of PCBs are little effected by atmosphere. From the products analysis, the products from the pyrolysis and combustion of PCBs and waste bumper are mainly composed by gaseous products. As the concentrations of oxygen increases, an decreasing tendency of the yield of residue from PCBs is observed. The aromatic compounds of liquid product increase as decreasing the temperature because the gas product such as ethene, propene and butadiene are combined by the Diels-Alder reaction. To verify the possibility for the recycling of residue from pyrolysis and combustion, the resulting residue of PCBs has been analyzed for their surface area and adsorption total pore volume.