Abstract: A modular extraction column. End blocks respectively have a flange on one side. A body block includes a plurality of column modules stacked on each other and coupled to the flanges of the end blocks in a surface contact manner. Each column module includes first and second module flanges provided on opposite ends and an accommodating portion provided in an inner portion to have a predetermined area. The column modules are coupled to each other such that the first module flange of one column module faces the second module flange of an adjacent column module. An inner structure is received in the accommodating portions of the plurality of column modules to distribute a fluid. The end blocks and the body block communicate with each other. The accommodating portion of each of the column modules has a quadrangular cross-section in a direction perpendicular to a longitudinal direction thereof.