The invention discloses a disk grabbing device which comprises a locating mechanism and a grabbing mechanism that are mutually matched, wherein the grabbing mechanism comprises a foundation support, a thimble, elastic elements, a permanent seat, a
piston and three jack catches, the foundation support is arranged right above a tray and provided with an installing groove, the permanent seat is fixed in the installing groove, the
piston is accommodated in the installing groove, the jack catches are uniformly distributed at 60 degrees and arranged in the foundation support in a pin-jointed way, each jack catch is provided with a button arm and a claw arm which form a lever, the claw arm is provided with a hook part for grabbing a disk, the bottom of the
piston supports against the button arm, an air pressure cavity is formed between the piston and the installing groove, the elastic elements are respectively arranged between the piston and the claw catches and between the permanent seat and the claw catches, when the disk is put down, air pressure is charged, the piston moves downwards, the elastic elements are compressed, the three claw catches are folded up; and when the disk is taken, the air pressure is released, the elastic elements restore and stretch out, the piston moves upwards, and the three claw catches unfold. The disk grabbing device disclosed in the invention has the advantages of higher cleanness and capability of effectively improving the yield and the production efficiency.