<p>The application of optical image stabilization (OIS) systems in camera modules is becoming increasingly widespread, with higher precision requirements for OIS components. Current research has primarily focused on the warpage of plastic parts, whereas the deformation of metal inserts with important circuit structures can also severely impact product quality. In this study, a combined approach of numerical simulation and experimentation is employed to investigate the impact of melt temperature, mold temperature, injection time, and insert material on the deformation of inserts in OIS components. The experimental design uses the Taguchi method, conducting Signal-to-Noise Ratio (S/N) calculations, Analysis of Variance (ANOVA), and Fuzzy Grey Relational Analysis. The results show that as the melt temperature increases and the injection time extends, the injection pressure and the maximum temperature difference at the flow front decrease, resulting in reduced insert deformation. The melt temperature is the main factor affecting the deformation of the metal inserts, while the mold temperature has the least impact on the deformation of the metal inserts. SUS430 and S316HN1 are ideal materials for inserts in OIS components. Injection molding experiments indicate that optimized parameters derived from numerical analysis can produce qualified OIS components with metal insert deformation less than 0.05&#xa0;mm.</p> Graphical abstract <p></p>