The invention discloses a wedge block moving device. A sliding support structure of the wedge block moving device comprises a rolling mechanism and a traction mechanism. The traction mechanism is divided into a fixing part and a traction rope with one end connected with the fixing part. When the wedge block moving device is used, the fixing part is inserted into a support body, the traction rope bypasses a handle on a wedge block, the wedge block can be removed by pulling the other end of the traction rope, and the operation is easy. According to the wedge block moving device, by means of theprinciple of a movable pulley, an operator only needs to move out the wedge block by reducing half the pulling force compared with the original pulling force, the removed wedge block falls on the rolling mechanism, the original sliding friction is changed into rolling friction, the required pulling force is further reduced, the labor intensity is better relieved, and the wedge block moving deviceis used in the technical field of wedge block movement.