The invention discloses a movable elevating step ladder. The movable elevating step ladder comprises a main ladder, a side ladder, a foldable rod and universal wheels, wherein the main ladder is provided with the side ladder, guide wheels, a locking part and a butterfly switch; the side ladder is arranged inside the main ladder; the right side of the side ladder is provided with a bump; the guide wheels are arranged on the two sides inside the main ladder; the locking part is arranged on the right side inside the main ladder through a revolving shaft; the butterfly switch is arranged below the right side of the main ladder; the butterfly switch is connected with the locking part through a connecting rod; the side ladder is arranged on the right side of the main ladder through a hinge; the foldable rod is arranged between the main ladder and the side ladder; a locking nut is arranged in the middle of the foldable rod; the universal wheels are arranged at bottoms of the main ladder and the side ladder. The movable elevating step loader is convenient to move and fix, and can extend and retract freely; by adopting the movable elevating step ladder, the working practicability is enhanced.