Abstract: Cold drawing forming, as an efficient and emerging forming process for linear guideways, exhibits significant advantages in improving product precision and mechanical properties. To clarify the influence mechanism of cross-sectional shape on the processing quality of cold-drawn linear guideways, the cross-sectional shape of the finished linear guideway are taked as the core research object, selects residual stress, straightness, and drawing force as the key evaluation indicators, and designs and conducts a 3-factor 3-level orthogonal test, in which the three factors are the chamfer size of the cross-sectional middle part, the chamfer size of the transition region between the cross-sectional middle part and the bottom surface, and the arc size of the cross-sectional bottom part, with three levels corresponding to different geometric parameter values of each factor (different chamfer sizes or arc sizes). The simulation test parameters are determined based on actual production conditions. Through the analysis of simulation test results, the influence laws of each cross-sectional shape parameter on processing quality are revealed, and the optimal cross-sectional shape parameter combination is screened out. This optimal cross-sectional shape parameter combination can provide a basis for subsequent experimental verification and simulation model modification. The optimization law of cross-sectional shape parameters can offer a reference for the process parameter optimization of high-quality cold drawing of linear guideways.