Abstract: Geosynthetic is intensively made from the raw materials such as PP. and PE, etc,mainly including four type of geotextile, geomembrane, special materials of earthwoth and com-pound rnaterials of earthwor. Geotextile has the feature of water permeability, and can be ued as drains and anti-filtrating rnaterials in the construction of water conservancy project. Geomembrance has the waer-proofing Characteristics, and can be ued as the waerproof maetial. Special maerials of earthwork are made into the geosynthetics for a paticular pupose, being used widelyin various shabo. For example, they can be ued to reinforce foundations and slope protection, etc.Compound materials of earthwork are made compositely from two or more than two kinds of earthwok materials. They are also used widely, for instance, in waerproofing, draining off water and building cofferdam and so on.