A sunroof structure of the present invention includes: side frames provided respectively in left and right side portions of a vehicle body roof; a roof panel having a sunroof opening; a sunroof having a front glass panel and a rear glass panel arranged next to each other; a sunroof side rail provided below a peripheral portion of the sunroof opening to extend along the vehicle front-rear direction; a reinforcement member disposed along a vehicle width direction between the rear glass panel and the sunroof side rail; and a drain member disposed between the peripheral portion of the sunroof opening and the reinforcement member and configured to receive water falling from the peripheral portion of the sunroof opening toward an inside of a vehicle cabin and cause the water to flow to a drain groove of the sunroof side rail.
