Viaduct vertical greening irrigation system and irrigation method thereof

The invention discloses a viaduct vertical greening irrigation system and an irrigation method thereof, and relates to the technical field of greening irrigation equipment.The viaduct vertical greening irrigation system comprises a ground, piers, a viaduct face and irrigation assemblies, the piers are longitudinally installed on the ground, the viaduct face is installed at the ends, away from the ground, of the piers, and the irrigation assemblies are arranged on the side end faces of the piers; the irrigation assembly comprises a filtering mechanism and a water storage tank, a green plant planting layer is arranged above the ground, a vertical potted plant is arranged below the irrigation assembly, a first irrigation main pipe is arranged above the green plant planting layer, and a second irrigation main pipe is arranged on one side of the vertical potted plant. According to the viaduct vertical greening irrigation system, underground water or tap water is automatically injected into the water storage tank u