Abstract: The present invention discloses a laser module lifting apparatus with a protecting function. The apparatus comprises a slide block for being fixedly connected with a laser module. The slide block is provided with a sliding groove, and the sliding groove is provided with a lifting slide rail in a liftable manner. A locking block is arranged between the lifting slide rail and an inner side wall of the sliding groove, and a side of the locking block away from the lifting slide rail is provided with a locking screw. By arranging the locking block at a locking end of the locking screw, a conventional way of jacking the lifting slide rail directly by using the locking screw is converted into a way of jacking the lifting slide rail by the locking block.