Ultra-thin roof greening module

The utility model discloses an ultra-thin roof greening module. The ultra-thin roof greening module comprises a container, wherein the bottom at the inner side of the container is provided with a plurality of water storage grooves which are arranged regularly, groove openings of adjacent water storage tanks are communicated through a groove, two or more water discharge holes are arranged between nonadjacent water storage grooves, a plurality of small holes are formed at the bottom of the inner side of the container and are located at the central positions of the water discharge holes which are regularly arranged, two rectangular holes are respectively formed at the upper portion of each side face of the container, and a filtering layer, a base material layer and a vegetation layer are arranged in the container from bottom to top. The ultra-thin roof greening module has the advantages of being ultra-thin in soil layer, reducing the self-weight, having functions of water storage and discharge, and being good in