Green building roof waterproof and drainage structure

The utility model belongs to the technical field of green building drainage, and discloses a green building roof waterproof and drainage structure which comprises a building body, a water collecting plate and a water collecting tank, a drainage pipe communicated with the interior of the water collecting tank is arranged at the bottom of the water collecting tank, a filter screen is arranged in the drainage pipe, and a garbage disposal barrel is arranged on one side of the drainage pipe. A first inclined pipe and a second inclined pipe are arranged between the garbage treatment barrel and the water drainage pipe, and the garbage treatment barrel is communicated with the water drainage pipe through the first inclined pipe and the second inclined pipe. According to the scheme, large garbage is intercepted through the arc-shaped net cover and prevented from entering a discharge pipe opening to cause blockage, small garbage, leaves and sludge can be filtered through the filter screen, and the garbage, the leaves a