According to one embodiment, there is provided an apparatus for opening, closing, and locking a
shutter of an automated teller
machine, including a
shutter that opens or closes a deposit / withdrawal unit of an automated teller
machine, a motor that provides a driving force to reciprocate the
shutter, a holder that reciprocates by receiving the driving force of the motor, a first roller, a second roller, and a third roller that move in conjunction with the holder, a two-section link including a first link whose both ends are coupled to the first and third rollers and a second link whose both ends are coupled to the second and third rollers and which is connected to the first link, a shutter
coupling frame connecting the two-section link to the shutter, a first rail along which the first and second rollers reciprocate horizontally, and a second rail including a horizontal section along which the third roller moves horizontally and an inclined section which is connected to the horizontal section and formed to be inclined upward and in which the third roller moves in an inclined direction.