The utility model relates to a modular insulated cable ladder frame, including stepping on case, carrier bar, cushion and footboard, step on the multilayer stair structure that bilateral symmetry was laid into to the case, the stair structure distance of the left and right sides is adjustable, the cushion be equipped with two, set up respectively the left and right sides the superiors step on the case on, the carrier bar be equipped with two, equal overlap joint on the cushion of the left and right sides, the footboard lay on the carrier bar. Compared with the prior art, the utility model discloses a modular insulated cable ladder frame can carry out the not arbitrary component of co -altitude, different length as required, and dismantles and the combination convenience, and application scope is wide, and the power cable room uses it, can improve operating personnel intensity of labour greatly, just steps on case, carrier bar, cushion and footboard and is insulating material, and the safety in utilization is high.