Nucleic acid extraction apparatus and operation method therefor

Disclosed according to one embodiment of the present invention are a nucleic acid extraction apparatus and an operation method therefor. The apparatus may comprise: a first rack having multiple sample tube accommodation units in a circle; a second rack having multiple elution tube accommodation units in a circle on the outside and a cleaning solution accommodation unit at the center, wherein at least a part of the cleaning solution accommodation unit protrusively extends outwards so as to alternate with multiple elution tubes; a main body having the first and second racks disposed such that the first rack is positioned over the second rack; a rotational operation unit for rotating each of the first and second racks; a dispenser for dispensing each of a cleaning solution and an eluate into sample tubes; and a pressing unit for pressing the inside of the sample tubes.