By studying on the stress and displacement distribution of pile clamping box of hydraulic static pile diver，promoting the pile clamping box，and improving quality of pile driving，the working principle of hydraulic static pile diver were introduced briefly. We can set up the main parameters of the model by using ANSYS software to establish finite element model of pile clamping box and program the command stream with APDL standing of ANSYS Parametric Design Language. Then the serialization simulation analysis on pile clamping box in the process of pile driving by adding force and pile clamping box under pile clamping and driving were achieved as well as the cloud diagram of Mises stress and the maximal Mises stress and displacement vector sum of pile clamping box were also elicited. With analyzing and studying, the simulation results show that increasing pile clamping force and augmenting pile driving force can reduce the maximal mises stress and displacement vector sum of pile clamping box effectively in the condition of adding Young's modulus of pile clamping box by，reducing becomingly Poisson's ratio of pile clamping box，diminishing pile driving force，decreasing pile clamping force under pile clamping.