The invention discloses a greening isolation fence device which comprises a base and a planting container, wherein the planting container is arranged at the top of the base, the bottom of the plantingcontainer is in embedded connection with the top end of the base through a concave-convex structure, the bottom of the planting container is provided with a water leakage hole and a water inlet hole,the inner wall of the upper part of the planting container is provided with an annular water channel communicating with the water inlet hole, and the annular water channel is provided with a water injection nozzle; and the base comprises a plurality of prefabricated base units, and every two prefabricated base units are connected and fixed to form a bulky isolation fence. The ecological greeningisolation fence disclosed by the invention has an ecological greening effect, is easy to disassemble and assemble, and has no need of artificial regular maintenance.