The plastic injection molding process has a great influence on the quality of product .This paper takes a shell for example , the warping deformation as the index , based on warping analysis module of Moldflow software , combined with orthogonal experiment scheme ,and has analyzed the influence of mold temperature , melt tempera-ture, filling time, packing pressure , packing time on the experimental index .According to the experimental re-sults, the influence degree sequence of injection molding process on warping deformation is holding pressure , melt temperature, mold temperature, holding ti...