The utility model discloses a movable cable cover plate jacklift of a transformer substation. The movable cable cover plate jacklift comprises a main frame, a top frame, a hand-operated winch, a pull rope and a hook. The bottom portions of four stand columns are respectively provided with a universal wheel which can drive the jacklift to move and can automatically change the direction. The top frame comprises two vertical stands and a top rod. The hand-operated winch is fixed to the middle of the top rod. The left end of the top rod and the right end of the top rod are respectively provided with a fixed pulley. The pull rope is wound on the hand-operated winch. The hook is fixed to the tail end of the pull rod after the two ends of the pull rope are wound around the fixed pulleys at the two ends of the top rod respectively. The movable cable cover plate jacklift of the transformer substation has the advantages that a cable cover plate can be rapidly and conveniently lifted, time for lifting, moving and restoring the cover plate during cable duct inspection is shortened, and potential safety hazards in the cover plate moving process are eliminated.