Abstract: Bamboo materials were pyrolyzed in TGA equipment (TGA/SDTA851^e) at heating rate of 5,10,20,30 K•min^-1 in the temperature range of 313～650 K and N2 atmosphere.The pyrolysis process of bamboo consisted of three steps: pre-pyrolysis of water evaporation，first step pyrolysis and second step pyrolysis. The kinetics of bamboo pyrolysis was analyzed based on the Levenberg-Marquardt method. The first step of bamboo pyrolysis could be considered as the pyrolysis of semi-cellulose to volatile matter only and well described by a first-order reaction model.The second step of bamboo pyrolysis could be considered as the pyrolysis of cellulose and lignin to volatile matter and char,and well described by a parallel first-order reaction model.The first step of bamboo pyrolysis was dependent on heat-up rate,while the second step of bamboo pyrolysis was independent of heat-up rate.