The invention provides a lifter which integrates the manual operation and the automatic operation into a whole, and belongs to a small type lift. The invention includes a casing wall, which is directly used as a lift well and an insulative curtain wall; a table, which is used for man to stand on, is fixed on a ball nut, and is lifted up and down in the casing wall; a screw mandrel electric actuating mechanism, which includes a ball screw mandrel that is relatively quiescent, the ball nut which is matched with the ball screw mandrel, the bracket of a driving subassembly, a electric motor whichdrives a worm reduction box to rotate by a shaft joint, an upper supporting structure as well as a lower supporting structure of the screw mandrel, an adjusting screw nut, a driving gear and a drivengear; a manual control subassembly, which includes a handwheel / hand lever, a driving belt wheel, a driven belt wheel, a shaft block, the worm reduction box, a mounting deck of the handwheel, and a spline arranged between the driving belt wheel and the handwheel / hand lever. The invention has the advantages that the design is scientific and reasonable, and the structure is novel; the ball nut cannotreverse because a self-locking device is arranged on the lifter, the invention is light and flexible when being operated by hand, and the switching and the operation are easy. The invention is an ideal lifter which integrates two control methods of the the manual operation and the automatic operation into a whole.