A genome extraction device comprising: an outer chamber partitioned into a plurality of first spaces by an outer chamber partition wall; and a bead chamber, which is coupled to the outer chamber through upper openings of the plurality of first spaces and partitioned into a plurality of third spaces (910, 920) by a bead chamber partition wall (901, 902) and configured to accommodate beads required for genome extraction and amplification in the third spaces (910, 920); and a base plate coupled to a lower portion of the outer chamber and having a plurality of flow paths communicating with the plurality of first spaces and formed on an upper surface of the base plate, wherein upper openings of the plurality of third spaces (910, 920) are covered by a third sealing member, and lower openings of the plurality of third spaces (910, 920) communicate with the plurality of first spaces and the plurality of flow paths and form a closed flow path, and wherein the plurality of third spaces (910, 920) comprise: a first bead chamber in which beads required for genome amplification are accommodated; a second bead chamber in which beads required for genome extraction are accommodated; and a dehumidification chamber disposed between the first bead chamber and the second bead chamber, and bead holders (911, 921) for preventing the beads from being discharged to an outside of the third spaces (910, 920) are installed in the first bead chamber and the second bead chamber, and wherein a dehumidifying unit (912, 922) for dehumidifying an inside of the plurality of third spaces (910, 920) is installed in the plurality of third spaces (910, 920), and wherein a first dehumidifying unit for dehumidifying an inside of the first bead chamber is installed inside the dehumidification chamber, and a second dehumidifying unit for dehumidifying an inside of the second bead chamber is installed in the second bead chamber. an outer chamber partitioned into a plurality of first spaces by an outer chamber partition wall; and a bead chamber, which is coupled to the outer chamber through upper openings of the plurality of first spaces and partitioned into a plurality of third spaces (910, 920) by a bead chamber partition wall (901, 902) and configured to accommodate beads required for genome extraction and amplification in the third spaces (910, 920); and a base plate coupled to a lower portion of the outer chamber and having a plurality of flow paths communicating with the plurality of first spaces and formed on an upper surface of the base plate, wherein upper openings of the plurality of third spaces (910, 920) are covered by a third sealing member, and lower openings of the plurality of third spaces (910, 920) communicate with the plurality of first spaces and the plurality of flow paths and form a closed flow path, and wherein the plurality of third spaces (910, 920) comprise: a first bead chamber in which beads required for genome amplification are accommodated; a second bead chamber in which beads required for genome extraction are accommodated; and a dehumidification chamber disposed between the first bead chamber and the second bead chamber, and bead holders (911, 921) for preventing the beads from being discharged to an outside of the third spaces (910, 920) are installed in the first bead chamber and the second bead chamber, and a first bead chamber in which beads required for genome amplification are accommodated; a second bead chamber in which beads required for genome extraction are accommodated; and a dehumidification chamber disposed between the first bead chamber and the second bead chamber, and bead holders (911, 921) for preventing the beads from being discharged to an outside of the third spaces (910, 920) are installed in the first bead chamber and the second bead chamber, and wherein a dehumidifying unit (912, 922) for dehumidifying an inside of the plurality of third spaces (910, 920) is installed in the plurality of third spaces (910, 920), and wherein a first dehumidifying unit for dehumidifying an inside of the first bead chamber is installed inside the dehumidification chamber, and a second dehumidifying unit for dehumidifying an inside of the second bead chamber is installed in the second bead chamber.