The pyrolysis characteristic of three kinds of traditional biomass is studied and two kinds of energy crops are divided into four types of biomass according to the chemical composition.The weight loss characters of energy crops and traditional biomass are studied by thermogravimetric analyzer,and then the kinetics parameter is figured out.In addition,the emitted gas component from biomass pyrolysis is analyzed by gas chromatograph and tube furnace.The results indicate that the activation energy of energy crops was bigger than traditional biomass,but the pyrolysis degree is deeper than traditional biomass obviously,simultaneously the quantity of pyrolysis fuel gas is the biggest.