A lubrication information management device (50) includes: a lubrication detector (51) provided to a lubrication unit (10)； an instrument wireless tag (52) provided to an instrument (110)； and a read-write unit which is either an antenna (55) or a reader-writer (53). Moreover, the read-write unit communicates lubrication information to the instrument wireless tag (52) when the lubrication detector (51) detects any of lubrication of the instrument (110) and an operation for lubrication. This makes it possible to reliably manage the lubrication of a dental instrument.
