The invention provides a molding for conveniently installing a cable. The molding includes a molding body which is provided with a wired hole for installing the cable, the molding body is provided with slides and mounting grooves at intervals, and the molding for conveniently installing the cable further includes a mounting base which includes two fixing plates, two guide rails and two pin boardsfor being connected with the fixing plates; the fixing plates are used for being connected with wall face, the pin boards are arranged to face the molding body in a protruding mode and inserted in themounting grooves of the molding body, and one sides of the guide rails are connected with the fixing plates; and the other sides of the guide rails are slidably inserted in the slides, and the molding body can slide along the slides to get close to or far from the wall face. According to the molding for conveniently installing the cable, cables can be conveniently placed into the molding again.