Abstract: In this paper,the design problem of transmission nodes in different distributed environment of the mooring system is proposed.Based on the mechanism analysis of the transmission nodes of each component and the force balance and torque balance equations,an optimization model of the mooring system is established.And the design scheme of mooring system for transmission nodes under different laying conditions is obtained.At the same time,a twice search algorithm is designed to solve the tidal factors.In order to adjust the mass of the heavy ball in the transmission node and take into account the tidal factor,the improvement idea of the design scheme is given.