An improved calculation model of double-row piles is submitted.Based on the case of “Excavation Engineering Handbook”,the rationality of theimproved calculation model was verified by compared with the 2D finite element model.The behavior of double-row piles is also analyzed.Through further parameter analysis and comparativeanalyse with calculative result of finiteelement model,the influence of the stiffness of the soil and the distance of two piles on calculation results are studied.The results show that the improved calculation model is suitable for the design and calculation of double-row pile engineering.