Provided is a beverage supply device that can properly sterilize a mouth of a container. A beverage supply device includes a container holding unit that holds a container, a nozzle that supplies a beverage to the container, an ultraviolet ray irradiation unit, and a control unit that controls the container holding unit to hold the container, And a relative movement unit that moves the nozzle and the ultraviolet irradiation unit relative to the container holding unit, wherein the ultraviolet irradiation unit is arranged in a state that ultraviolet can be irradiated to a tap of the container in a state where a distance from the container to the nozzle reaches the set distance. Fig. 9

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