To summarize and promote the design and construction experiences of a super large offshore island-type jetty,taking the design of the 300,000-ton-class jetty of Sinochem Quanzhou as an example,several key technical problems to be solved in the project are proposed,such as coordination of work ship berths and operation standards of large oil tankers,the structural design of the 450,000-ton terminal with large waves and large geological changes,the fixation of submarine pipelines,and fire protection water safety guarantee. By analyzing the wave geological conditions,optimizing the layout of the wharf,calculating the load,and innovating the structure,the above problems have been effectively solved.