The invention provides an underground garage roof with the functions of rainwater collection and
vegetation conservation. The underground garage roof with the functions of rainwater collection and
vegetation conservation comprises a
reinforced concrete floor, a
cement mortar protective layer, a slope finding layer, a
cement mortar leveling layer, a flexible waterproof layer, a drainage layer, an isolation filtering layer, an anti-puncture layer, a planting layer, a cover plate and a mounting groove cover plate from bottom to top. An
irrigation system is arranged in the planting layer, a floordrain and a drain
pipe are arranged on the portion, below the drainage layer, in the flexible waterproof layer, the drain
pipe is connected with a rainwater collection well on one side of a planting top plate, a mounting groove is formed beside the rainwater collection well, a water pump is put in the mounting groove, the water pump is connected with the
irrigation system arranged in the plantinglayer, and a bearing plate is provided with round holes. The underground garage roof has the beneficial effects that the structure is simple, the
water holding effect of the planting layer is good, waste resources are reused, rainwater is recycled, and a waterproof and drainage
system of the underground garage roof is perfected to the maximum degree.