The characters on double-row pile retaining structures are affected significantly by spatial effects. In this paper, double-row pile retaining structures are simulated numerically in three-dimension by finite element software PLAXIS. The behavior differences among piles in different positions around the foundation pit are analyzed. The results show that the deformation and moment are biggest in the middle of long side of the foundation pit. It is suggested that the earth pressure between the rows above the pit bottom is close to active earth pressure.