The use of double-row steel pipe pile cofferdams in subsea engineering is gradually increasing, but there is less analysis on the influence of cofferdam parameters on the deformation and force of steel pipe piles. The calculated results are compared with the measured results to verify the reasonableness of the finite element model. By studying the influence of pile distance on the force deformation of steel pipe pile cofferdam, it is concluded that with the simultaneous increase of double-row pile distance, the internal force deformation of steel pipe pile increases, and then slow down. The pile distance increases by the same magnitude, and the influence of the outer pile distance on the cofferdam is greater than the increase of the inner pile distance. When the number of piles is certain, increasing the outer row pile distance can control the deformation more effectively than evenly distributed steel pipe piles. This paper may provide reference for the design and construction of similar projects.