The second pattern is a comparison between the master component and the alternative component. Specifically, the control unit 24 determines whether or not the component IDs of the master component and the alternative component acquired from two supply reels 14 belong to the common group by referring to the component group data 21. The control unit 24 determines a comparison to be OK when the two component IDs belong to the common group, and determines a comparison to be NG when the two component IDs do not belong to the common group. It is possible to prevent the erroneous setting of the supply reel 14 by performing the component comparing process. As mentioned above, the component arranging operation supporting apparatus 4 checks whether or not the component disposed in a predetermined position in the component supplying unit is a component to be disposed in the predetermined position based on the identification information of the component acquired by the identification information acquiring unit.