This component information management system (100) is provided with: identification devices (30), which are attached to attached components installed at installation positions, and which store component information for identifying the attached component; communication devices (15) for acquiring the component information through wireless communication with the identification devices (30); a transmission device (200) for transmitting acquired information, including the acquired component information; and a management device (111) for managing the acquired information received. The component information includes type information indicating the type of each attached component and unique information for distinguishing attached components of the same type from one another. The management device (111) is provided with: an acquisition information determination means (1114) for determining whether or not the acquired information received includes a larger number of same-type-component information, that is, component i
