HOLLOW FIBER MEMBRANE MODULE

A hollow fiber membrane module including a plurality of hollow fiber membranes, a case, in an accommodation interior of which the plurality of hollow fiber membranes are accommodated, the accommodation interior being open at both ends, and a pair of sealing and fixing portions that seal gaps among the plurality of hollow fiber membranes in a state where each of hollow interiors of the plurality of hollow fiber membranes is open on each of one end side and the other end side of the case, wherein the hollow fiber membrane module further including a holding member provided in the case and configured to hold the plurality of hollow fiber membranes, and the plurality of hollow fiber membranes are fixed to the holding member by the pair of sealing and fixing portions.