The present invention relates to a cable management assembly (3) for a cable manager, and a cable manager comprising the same, wherein the cable management assembly comprises a plurality of cable management elements (4) arranged sequentially, at least one of which forms a cable receiving portion (5), in which two adjacent cable management elements are connected to each other through a weak portion (7) which is breakable by rotating the weak portion, so that the two adjacent cable management elements are separated from each other. The cable management assembly may be changed flexibly as necessary in an ex post facto manner.