Both special-shaped components and semi-circular structures have been widely used in the phased implementation of the Yangtze River deep waterway regulation project.In view of the similarities and differences between them,theoretical and practical research is applied.The characteristics and application scope of the two methods are obtained from the comparative research methods of structure shape,structural principle,construction technology,application effect and economy.The conclusion is that both of them are suitable for deep water channel regulation project under normal working conditions.Under the same conditions,the special-shaped components have good economy and durability, while the semi-circle can cope with the big wind and waves,and the application has advantages in the structure of the large section.