Corn straw pyrolysis was performed in a batch pyrolysis reactor in order to understand the influence of the process conditions on the yields and product characteristics.Typical pyrolysis conditions (temperature, additives and pretreatments) were investigated in the reactor.The chemical and physical properties of the products from the pyrolysis were analyzed using GC/MS, elementary analyzer, FTIR.Moreover, the effects of feedstock pretreatments and catalysts on pyrolysis were also examined.