Provided is an information processing device, an information processing method, and a moving image distribution system enabled to provide a moving image distribution service having higher interactivity. The information acquisition unit acquires information indicating that an additional image is caused to move from one to another of a distribution moving image display area and an outer area, the additional image being displayed on the distribution moving image display area for displaying a distribution moving image or on the outer area provided outside the distribution moving image display area. The display control unit controls display of the additional image on the basis of the information in a case where the additional image moves between the distribution moving image display area and the outer area.