The present invention relates to a device for generating a synthesis gas (SG) from biomass (BM) by entrained-flow gasification. The device comprises a treatment plant (1), in which the biomass (BM) is supplied to a coarse crushing device (2), which is connected downstream via a first lock (3) to a pressurized carbonization plant (4) for the hydrothermal generation of carbonization char (KK) from the biomass (BM). The carbonization plant (4) comprises at least one preheating device (5) and a carbonization reactor (6) arranged downstream of the preheating device (5) and is connected downstream via a second lock (11) to at least one solid-liquid separation device (12, 13) for providing a fuel. A drying device (16) for drying the fuel is provided downstream of the solid-liquid separation device (12, 13), with a crushing device (18) for crushing the fuel to form pulverized fuel (BS) having particle sizes in the range of 55 μm to 500 μm being connected downstream of the drying device. The device further comprises a transfer device (21) for transferring the fuel to an entrained-flow gasification plant (22), whereby a coupling of the treatment plant (1) to the entrained-flow gasification plant (22) is provided. The present invention further relates to a method for generating a synthesis gas (SG) from biomass (BM) by entrained-flow gasification using a device according to the invention.