The perforation, to a certain extent, can effectively reduce the formation fracture pressure to avoid cracked distortions and multiple fractures. And the perforation parameters are related with the borehole wall surrounding rock stress and the fracture pressure, thereby, the fracturing pressure capacity and the dynamic evolution of the perforation shaft wall surrounding rock stress field are important issues for the hydraulic fracturing operation, the wellbore stability, and the reservoir reconstruction. In this paper, firstly, using the finite element analysis software ABAQUS, a three-dimensional numerical model of the casing-cement ring-formation is established to study the fluid-structure coupling effects and the dynamic effects. A qualitative understanding of the borehole wall surrounding rock stress distribution and the hydraulic fracturing breakdown pressure is achieved and the optimal perforating parameters are obtained by the numerical simulation on the basis of the single variable theory for the perforation parameters, including the perforation density, the perforation length, and the perforation azimuth. The results provide some theoretical guidance for the fractured well perforating technology optimization design.