Lianyungang port is typical muddy coast. The natural condition of harbor construction is odious. So, we need to find a new hydro-structure to fit harbor construction in the odious natural condition. We recommend a new hydro-structure named bucket-based structure, research the characteristics and structure styles of the new hytro-structure, and expound the application prospect of three actual project cases including the breakwater project of Xuwei, bulkhead wall project of Xuwei port and workboat wharf project of Mayao port. The results show that the new bucket-based structure has the function of developing the properties of mud and raising the bearing capacity of foundation. The new structure is suitable to the development of deepwater and big port in Lianyungang port. It also provides the technical support for the port construction of Lianyungang.