The optimization design of equivalent water depth truncated mooring system in hybrid model testing for deep sea platforms is explained in this paper.

With the back stiffness and small coverage, wide application of depth, etc., synthetic fiber cable has gradually become the main component of a new deep-sea mooring system.

On the basis of fully study of existing facts, the form selection, arrangement of the system and the design method of each component for the mooring system of deep sea data buoy were posed.