Lighting roof building structure

The utility model relates to the technical field of daylighting roofs, and discloses a daylighting roof building structure which comprises a roof, a drainage hole is fixedly connected to one side of the roof, a solar panel is arranged on one side of the front face of the roof, a motor box is fixedly connected to the interior of the roof, and a motor body is fixedly connected to the interior of the motor box. The output end of the motor body is in spline connection with a transmission rod, the outer surface of the transmission rod is fixedly connected with a sweeping rod, and the two sides of the sweeping rod are fixedly connected with cleaning brushes. According to the daylighting roof building structure, through the arrangement of the waterproof layer and the drainage holes, the effects of draining water on the roof and preventing rainwater from being accumulated on the roof are achieved in the using process, the situation that rainwater infiltrates into a room through the connecting position to cause damage