The present invention addresses the problem of providing an adsorption column wherein it is possible to improve the adsorption properties of a substance to be adsorbed by allowing a treatment solution to flow inside and outside a membrane by using a hollow fiber membrane. In order to solve said problem, the present invention provides an adsorption column in which a hollow fiber membrane bundle is embedded in a case and a treatment solution introduction unit and a treatment solution extraction unit are provided to both ends of the case, the adsorption column having a structure in which the treatment solution flowing in from the treatment solution introduction unit directly comes into contact with the inner surface and the outer surface of the hollow fiber membranes, wherein the hollow fiber membranes have a porous structure, and the equation 0.15<β/α<2 is satisfied when α=A×L/(N×Ri4) and β=A×{L×(R+N×Ro)2/(R2-N×Ro2)3+1/(n×RP4)}. (In the equations, Ri represents the inner diameter of the hollow fiber membranes, Ro represents the outer diameter, L represents the length, N represents the number of hollow fiber membranes, R represents the inner diameter of the case, l represents the thickness of a partition wall partitioning the hollow fiber membranes and a header section, RP represents the average diameter of a hole for external circulation, n represents the number of holes for external circulation, α represents the pressure loss within the hollow fiber membranes, and β represents the pressure loss on the outside of the hollow fiber membranes.)La présente invention a pour objectif de traiter le problème de la fourniture dune colonne dadsorption présentant des propriétés améliorées dadsorption dune substance à adsorber en faisant circuler une solution de traitement à lintérieur et à lextérieur dune membrane en mettant en œuvre une membrane capillaire. Afin de résoudre ledit problème, la présente invention concerne une colonne dadsorption dans laquelle un faisceau de membr
