To provide a liquid jetting device which can make a liquid housing body perform a proper process as a new article even when the liquid housing body housing a liquid filling amount being different from liquid filling amount information which is stored on the main body side is attached.

When a cartridge is loaded in a printer for the first time, a flag is turned on (set) (S10 and S20), and whether the cartridge is a new article or not is judged (S50). The condition by which the cartridge is judged to be the new article in the case of the cartridge in which ink of a plurality of colors are filled is that the ink consumption amount regarding all colors is "0", or the number of attaching processes is "0". Even when a cartridge in which ink of the ink end value Zo being different from a set ink end value Z stored in the printer main body side is filled is attached, if the number of attaching processes is "0", the cartridge is judged to be the new article.