The present invention relates to a beverage injection device which comprises: a main body frame (10) having a rectangular shape; a transfer conveyor (12) installed in a central lower portion of the main body frame (10); a transfer guide plate (14) for preventing a beverage container from being escaped to the outer side of the transfer conveyor (12); a beverage storage tank (20) installed on the upper side of the transfer conveyor (12); an injection nozzle (50) for injecting a beverage of the beverage storage tank (20) into the inside of the beverage container (B); and a vertical transfer means (30) for vertically moving the beverage storage tank (20). According to the present invention, the beverage injection can be carried out by replacing only a liquid supply plate and a nozzle fixing plate without the need to replace the entire beverage storage tank according to the size of the beverage container.
