Abstract: The Lateral motions of Articulated Lifting System under ocean current and wave are researched,by using sine mechanism and a string of naked cylinders.Firstly,the lateral motions of articulated cylinders under the four-grade oceanic condition are analyzed during test.The model of lifting system is established by virtual prototype technology.Its dynamic behavior under the same oceanic condition is analyzed.Compared with the test findings, the test technical can be proved to be feasible.Then the Lateral Motions of Articulated Lifting System during different periods are simulated.When the period is very small,the buffer do tiny range of motions.And the results can be used for providing test foundation to research articulated lifting system subsequently.