In order to study the shear characteristic of structure plane with pile reinforcement, the three dimensional models for structure plane and pile element were founded by the numerical calculation method. The parameters of the pile were changed to study the variation of the shear strength and deformation characteristic of structure plane. The results show that the shear strength of the structure plane after pile reinforcement increases, and cohesion is changed more greatly than that of internal friction angle. With the increase of the inclination of pile element, the cohesion first increases and...