Abstract: In order to resolve the problems occurring in the balanced injection molding process for the plastic parts with a large volume and irregular shape, the scheme for threepouring injection was adjusted and the balanced injection was optimized through CAE auxiliary analysis.The warpage of the injectionmolded products was effectively controlled to about 15mm, which avoided the potential of the die scrap caused by the gating system set by experience.Based on the control of warping deformation, the optimum parameters for the injection molding process of products could be obtained for mold temperature at 245 ℃, for material temperature at 60 ℃, for two section holding pressures with 90 MPa/16 s and 70 MPa/9 s, and for cooling time with 60 s.An experimental injection molding process confirmed that the optimized process parameters met the requirement for massive production.The CAEassisted analysis can effectively predict the potential molding problems in injection molding and avoid the venture of improved production cost caused by simple experience.Therefore, the accuracy of designed mold and the production efficiency were improved significantly.