With the accelerated urbanization process, the height of urban buildings continues to increase, increasing density, which leads to urban greening project construction space shortage problem, and urgent requirements of greening construction from flat to three-dimensional change. With the continuous development of the city, the contradiction between construction land and ecological land is becoming more and more prominent, how to increase the total amount of greening and improve the urban ecological environment in the city of every inch of land, putting forward new requirements to urban environmental workers.