As one of the foundation forms, the pile group foundation composed of vertical piles is widely applied to resist horizontal loads. The characteristic of the distribution of soil resistance in front of and behind the pile group is a component of deformation performance of pile group under horizontal load. At past, its study was performed by theoretical analysis and experiments. In this paper, the spatial 20 nodes FEA was used to analyze the close field soil and piles and the spatial 12 nodes infinite element...