With the development of overseas projects, more and more projects relate to seismic design. However, rules by the domestic seismic design of port and waterway engineering are far different from those by the international codes, thus the seismic design becomes a problem of design approval. Therefore, international regulations of seismic coefficients for the seismic design of retaining structure in the port and waterway engineering are collected and summarized, to serve as reference for the seismic design of marine structure of overseas projects and provide a solid foundation for the successful design approval.