The utility model relates to a noble metal inspection machine, including defeated coin passageway, image processing module and the main control module, defeated coin subassembly sets gradually on the defeated coin passageway, coin fixture, coin detection mechanism, material discharging component and useless coin tray filler construct, coin fixture is mainly by going into the coin device, ask coin device and rotating device to constitute, rotating device is including rotating the motor and installing the carousel on rotating the motor, there is a set of clamping fixture who is used for horizontal centre gripping coin along its circumferencial direction equipartition on the carousel, useless coin tray filler constructs including two slide rails, feeding sensor and fine motion sensor, article two, slide rail symmetry sets up and on two a slide rails sliding connection layer board, layer board and lead screw fixed connection, the lead screw is by lead screw motor drive, set up two at least useless coin dishes on the layer board, evenly set up a plurality of division boards along its width direction on useless coin dish, and will give up coin dish and separate into the big or small the same coin portion of accomodating of a plurality of row. The utility model discloses the advantage is that the whole structure is compact, and area is little.