The invention discloses a skirting line mounting hanger. The back part of a matched skirting line is provided with a groove with a downward opening; the hanger is a strip-shaped section bar; a main body part of the section is C-shaped; the end head of the upper end of the C-shaped hanger main body extends upwards to form a mounting part (1) which is embedded in the groove of the skirting line in a matching manner; and the C-shaped hanger main body is provided with mounting holes (2) to be fixed on a wall face. The skirting line mounting hanger has the advantages of capability of avoiding the conventional gluing adhesive mounting mode, quickness and convenience in mounting, convenience in overhauling, capability of reuse for many times, water proofing and environmental friendliness.