The polypropylene (PP) based wood plastic composite (WPC) was prepared by compress method，and the non- isothermal crystallization kinetics of the composite was characterized by differential scanning calorimetry，the Jeziorny method and Mo method were used to analyze the non-isothermal crystallization kinetics and the results showed that both of the methods can work well on the composite，the wood flour can improve the peak temperature of crystallization and decrease the crystallization time of the PP based WPC .