The invention discloses a biomass pyrolysis gas/charcoal co-production device and process. The co-production device comprises a fluidized bed gas burner, a pyrolysis gasification auger, a vapor discharge system, a charging device, a gas-charcoal separation device, a high-temperature gas booster fan, an air preheater and other equipment. The production process comprises the steps that biomass materials are conveyed into the pyrolysis gasification auger for pyrolysis and gasification reaction; in the reaction process, water vapor generated at the drying layer is discharged through the vapor discharge system, charcoal generated after pyrolysis and gasification and high-temperature biomass gas with a low heating value are separated through the separation device to obtain high-quality charcoal, and a part of the generated high-temperature biomass gas with the low heating value is output into the fluidized bed gas burner for reaction; meanwhile, bed materials are fluidified to supply heat to the pyrolysis gasification auger so as to keep the pyrolysis and gasification reaction continuous. By the adoption of the process, the method is advanced, production equipment is simple and reliable, the yield rate of charcoal from biomass is high, and the production effect is good.