NOVELTY - The method comprises initial drying biomass material in drying/carbonization integrated furnace until water content is less than or equal to 40% using hot-blast air, pumping quantitative air in the drying/carbonization integrated furnace using a draught fan for volatile combustion, discharging hot smoke pneuma and un-burnt volatile mixed pneuma from a drying/carbonizing air outlet, subsequently feeding of the biomass material to contact with the pre-heated biomass material, drying and carbonizing at 400-800 degrees C to form carbonized material.    USE - The method is useful for processing carbonization and activation of biomass to generate electricity (claimed).    ADVANTAGE - The method is capable of processing carbonization and activation of biomass to generate electricity with high-efficient utilization of energy.    DETAILED DESCRIPTION - The method comprises initial drying biomass material in drying/carbonization integrated furnace until water content is less than or equal to 40% using hot-blast air, pumping quantitative air in the drying/carbonization integrated furnace using a draught fan for volatile combustion, discharging hot smoke pneuma and un-burnt volatile mixed pneuma from a drying/carbonizing air outlet, subsequently feeding of the biomass material to contact with the pre-heated biomass material, drying and carbonizing at 400-800 degrees C to form carbonized material, introducing water steam and the carbonization material into a external-heat carbonization activation furnace, forming and activating at 800-1000 degrees C to obtain activated material gas, discharging activated material gas and activating pneuma into a closed chamber of the external activation furnace for combustion, maintaining activation furnace temperature, producing waste heat of a waste heat boiler from the combustion chamber, heating water vapor, sending portion of water vapor into a generating set to generate electricity. An INDEPENDENT CLAIM is included for a self-hot-type continuous biomass carbonization and activation processing device.