To provide a file management device which realizes conversion of DICOM-style files with various attributes obtained by adding patient data and inspection data to a medical image in particular to the files with the same attribute and storing and managing them in a device as for the management of an image file having a specific attribute.

A detection means 20 detects storing of an image file 100 in an image file storing part 10. An image file attribute conversion means 30 attaches patient attribute information and inspection attribute information to the attribute of the image file 100 to be stored, and stores it in the image file storing part.