The utility model provides a pitched roof three-dimensional
greening system which comprises an inclined waterproof bottom film, a
barrier layer, a waterproof disc, a spongy soil disc and a
vegetation layer, the waterproof bottom film is located above a pitched roof, and the
barrier layer, the waterproof disc, the spongy soil disc and the
vegetation layer are sequentially arranged above the waterproof bottom film. The waterproof disc and the spongy soil disc are connected through the T-shaped positioning grooves and the T-shaped positioning blocks. The waterproof bottom film and the
barrier layer are arranged between the roof and the waterproof disc; the design of longitudinally and transversely combining the waterproof disc and the spongy soil disc is adopted, so that effective drainage and
water collection characteristics are provided for three-dimensional
greening soil; the waterproof disc and the spongy soil disc adopt a buckle type connection structure, the installation mode is simple, and the construction efficiency is high; the spongy soil disc is of a perforated structure, water in the spongy soil disc can be dredged into the waterproof disc, the
self weight of the structure is reduced, and an ideal effect is achieved in
greening of the pitched roof of the house.