As building material of a new type, earth work fabric has a very strong permeability to water, it could be applied to antifiltering drainge in soil and water conservation projects.Given a meet condition and suitable material, the earth work fabric would give full play to its function of permeability, retainning to soil and sand.When the fabric is applied in projects.the construction is simple.the invest is spareable and the economic benefit is obvious.it is a building material that worth spread.