Tree trench cover pool in the city is now in the beautification of the environment to a wide range of applications, is now expanding urban green area, the soil around the trees can not harden, to maintain adequate moisture, need regular watering, but not hardened ground treatment, it is easy from the dust, dirty ground around the tree we have devised a trench cover pool does not affect normal for watering trees, water can easily penetrate into the soil, the soil does not drain 2 protection, to avoid dust. 3 nice, like a guardian of the city's trees TV. Tree trench cover pool based mainly on tree size custom pool ditch, split two general points.