To provide an automatic track lift workbench for a main distribution frame in a telephone office allowing connection work of jumper cables to be performed on a workbench conveniently and safely.

The automatic track lift workbench for a main distribution frame in a telephone office comprises a pair of supporting frames arranged between racks of the main distribution frame in a telephone office, with its opening part between right/left frames and oriented toward bottom side, a rail part, a driving part D having a hydraulic line connected to a hydraulic cylinder, for moving on the rail part, an elevating part T guided by the operation of the hydraulic cylinder along the driving guide shaft on the vehicle bench of the driving part, and having an elevating guide shaft on one side surface, an on-board work adjusting part W that is elevated by the elevating part to a pre-determined height and is equipped with a boarding part having an operation panel for controlling operation of the pulled out jumper cables in forward and rearward directions, and in vertical directions, and a jumper cable pulling out part J having a jumper cable guide and a jumper cable cone, and a foldable emergency ladder.