Abstract: This paper is aimed at the mooring system of the transmission node of the near-sea observation network. The static equilibrium analysis method of the polygonal approximation method is used to analyze the force of each part, and the mathematical model of four state parameters is established. The segmentation extrapolation method and Fourier analysis are used to fit the anchor chain shape curve, and the various state parameters of the system are calculated for different wind speeds. The original model is optimized under actual sea conditions, and the optimized the inversion model of the mooring system is established. The optimal design scheme of the system parameters is obtained.