Article rejecting system

An article rejecting system includes: a conveyance unit that conveys an article along a conveying direction; a detection unit that detects the article which is conveyed by the conveyance unit; a rejecting unit that is provided on a downstream side of the detection unit in the conveying direction and performs a rejecting motion for rejecting the article which is conveyed by the conveyance unit; a control unit that controls the rejecting unit such that the rejecting motion is performed at a predetermined automatic timing when the detection unit detects the article; and an input unit that accepts input of a manual operation for causing the rejecting unit to perform the rejecting motion at a manual timing. The control unit sets the automatic timing based on the manual timing, if the input unit accepts the input of the manual operation when the detection unit detects the article.