TECHNOLOGY FOCUS - ELECTRONICS - Preferred Components: The electric furnace wire placed in the inner part is a nickel-chromium electric furnace wire or an iron-chromium-argon electric furnace wire, where the current of the electric furnace wire is 2-4 A.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The biomass is straw, sawdust or rice hull. The mass ratio of the biomass carbon powder to the catalyst is 1:(0.5-1) and the binding agent (in wt.%) is (3-10) of the mixed powder. The catalyst comprises nickel (II) oxide-aluminum oxide and HZSM-5 in a mass ratio of 1:(0.8-1.2). The nickel (II) oxide in the nickel (II) oxide-aluminum oxide is 17-19 wt.% of the aluminum oxide. The molecular ratio of silicon to aluminum in the HZSM-5 is 25. The binding agent is kaolin or sesbania powder. Preferred Method: The mixed powder is dried for 9-11 hours at 100-120 degrees C and sieved to obtain a mixed powder of particle size 0.25-0.38 mm, which is reduced. The step (iii) comprises: filling the dried mixed powder into a reactor, which is provided with an electric furnace wire, contacting with the surface of the electric furnace wire, reducing for 55-65 minutes at 490-510 degrees C in a highly pure hydrogen gas atmosphere, heating up to 400-800 degrees C, pre-heating the crude biological oil reformed synthetic gas at 180-200 degrees C and carrying out the coal gas reaction and the reversed water gas reaction in the presence of the catalyst. The pressure of the coal gas reaction and the reversed water gas reaction is 1-1.2 atm and the reaction flow rate is 40-100 ml/minute. The synthetic catalyst is added during synthesizing in step (iv) which is a copper zinc aluminum catalyst, comprising (in wt.%): cupric oxide (55-65), zinc oxide (25-35) and aluminum oxide (5-15). The catalyst is treated by: raising the temperature in hydrogen atmosphere with volume percent of 9-11% and flow rate of 95-105 ml/minute at a rate of 2-3 degrees C per minute, raising the temperature to 235-245 degrees C and maintaining for 17-19 hours, and reducing to room temperature. The temperature of the synthesizing step is 220-300 degrees C, the pressure is 4.5-5.5 MPa and the space velocity is 9000-11000 h-1.