MILKING DEVICE

Provided is a milking device that makes it possible to more reliably and effectively curb backflow of milk and reduce the risk of infection leading to mastitis. This milking device 10 is provided with a teat cup 1 comprising a liner 3 including: a bore part 3b that is arranged inside a cylindrical shell 2 such that a predetermined space is formed with an inner surface of the shell 2 and that is elastically deformable between an open state and a closed state; a mouthpiece part 3a which is arranged at one end side of the bore part 3b and closes off one end part of the shell 2 and into which a teat is inserted; and a short milk tube part 3d which is arranged at the other end side of the bore part 3b and closes off the other end part of the shell 2 and through which milk that has been suctioned from the teat at the bore part 3b flows. The milking device is also provided with a milk claw 30 to which the short milk tube part 3d is coupled. Vents 3aa, 3da, 36 are provided to a plurality of places on the mouthpiece part 3a, the short milk tube part 3d, and the milk claw 30.