In landscape work, HDPE membrane is applied more and more, especially in these years, our country puts more attention to environment protection of landscape of gardens. HDPE membrane is accepted and used day by day. In water-defending project, HDPE membrane has advantage of permanence and agility than concrete, stone and dope. Concrete operates long, costs much, HDPE membrane needs short time, easy to operate and repair, costs little, which can perfectly satisfy developing demands of garden landscape, so HDPE membrane will be used more and more.