To provide a device for managing an office corporeal object for searching a file with a radio tag attached on it, by attaching the radio tag on the office corporeal object such as the file and communicating with the radio tag.

This managing device is constituted of the portable office corporeal object with the radio tag attached on it and a radio tag communication means having a function to communicate with the radio tag attached on the office corporeal object. The radio tag communication means is provided with an informing means to inform when a location of the office corporeal object with the radio tag attached on it is detected.