Abstract: The application of embankment construction technology using large geotextile bags filled with dredged soil in Xuwei port area of Lianyungang is discussed in order to solve the lack of rock and sand resources, to protect the eco-environment, to reduce the project cost and to utilize the dredged soil from channel efficiently. The theoretical feasibility of this technology has been proved by numerical modeling of stability and centrifugal model tests. The complete new construction technology is proposed based on the prototype tests. During the construction and operation periods, the embankment construction using large geotextile bags filled with dredged soil and the embankment foundation stability satisfy the safety requirements. The water pressure in the geotextile bags dissipates quickly in the whole construction process. The compression and ratio of filling bags can satisfy the requirement of embankment construction. The stress of geotextile bags is less than the strength of its allowable range. The geotextile bags can be maintained completely.