An auxiliary conveyor, which is connected with a main conveyor including at least two conveying paths, the auxiliary conveyor including a conveying part configured to receive a load from one of the at least two conveying paths and convey the load through the other of the at least two conveying paths; and a driving part connected with the conveying part and configured to drive the conveying part to move from one of the at least two conveying paths to the other of the at least two conveying paths.