The purpose of the present invention is to provide a beverage supply device capable of enhancing cup discrimination accuracy on the basis of a captured image of a cup. For this purpose, the beverage supply device is provided with: a mounting part 29 in which a bottom part 29c on which a cup C is mounted extends to a rear wall 27 side of a beverage supply part and that has an extension part 51 not covered with the cup C; an imaging part 60 having an imaging control part that captures an image of the cup C mounted on the mounting part 29 and the extension part 51 from the rear wall 27, captures a correction image within a correction frame reflecting only the extension part 51 within the range of a captured image before capturing the image after the cup C is mounted on the mounting part 29,...

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