Lightweight roof greening structure

The utility model provides a light roof greening structure, which relates to the technical field of roof greening and comprises a greening box body, a plurality of water injection pipes are arranged in the greening box body close to the bottom in a staggered manner, and first circular covers are fixedly mounted at two ends of the plurality of water injection pipes. One end of one of the multiple water injection pipes is fixedly connected with a water inlet pipe, a first water pump is arranged on the outer surface of the water inlet pipe, and multiple water outlets are formed in the bottoms of the multiple water injection pipes. According to the greening device, the water inlet pipe is matched with the first water pump, the effect of supplying water into the water injection pipes is achieved, the multiple water injection pipes are arranged in a staggered and communicated mode and matched with the water outlet, the effect of evenly supplying water into the greening box is achieved, and the effect of reducing so