Abstract: Catenary anchor leg mooring (CALM) type single point mooring system has been widely used internationally. It is mainly used for the transfer of oil; Oil is transported from the tanker to the land terminal through this system, for example, Guangxi Maoming CALM type single point mooring system and Weizhou CALM type single point mooring system. The system is generally fixed on the sea by six anchor chain legs that are distributed at an angle of 60 degrees. Most of the anchor chain legs are composed of anchor piles and anchor chains. The anchor piles are generally steel piles made of steel. Because the anchor pile is independent on the seabed, how to ensure the installation accuracy during offshore installation to meets the design requirements is the main difficulty. This article studies the installation technology of this kind of anchor pile, and is applied by similar projects.