Tree root accumulated water drainage system

The utility model relates to a root accumulated water drainage system which comprises a tree pit, a water collecting pipe is arranged at the bottom end of the tree pit, water seepage holes are formedin the side wall of the water collecting pipe, and the water seepage holes are evenly formed in the side wall, away from the bottom wall of the tree pit, of the water collecting pipe. One end of the water collecting pipe is closed, and the other end is opened and communicated with the inside; wherein a layer of geotextile is wound on the water collecting pipe, hoops are arranged at the two ends ofthe water collecting pipe in a sleeving mode, the inner walls of the hoops are attached to the geotextile, and the open end of the water collecting pipe is connected with a water collecting tank; theheight of the periphery of the bottom of the tree pit is low, the height of the center of the tree pit is high, an arc-shaped boss is formed, and the water collecting pipe is arranged in the circumferential direction of the ar