The proceed of these two reactions influences the composition of the syngas, while promoting the progress of reaction 2 ameliorates the production of CO and promotes the production of hydrogen. From the information of the reaction equations, the equilibrium of reaction 2 is expected to shift to the direction of hydrogen formation as the steam content in the reaction system increases and the reaction temperature decreases. To determine the optimal conditions for hydrogen production, the gasification temperature x was set at 800°C, 900°C,1000°C or 1100°C; the steam supply rate during gasification process y was set at 1 mL/min, 2 mL/min, 3 mL/min, 4 mL/min or 5 mL/min; and the pyrolysis temperature z was set at 300°C, 350°C, or 400°C. In this study, experimental groups with different reaction conditions were noted as x-y-z. For instance, 900-5-300 denoted that 300 o C-pyrolyzed feedstocks underwent gasification reaction at 900 o C with a constant steam supply at 5 mL/min.