Figure illustrates the orientation adaption of branched polymers in response to deformation. All topological polymers exhibit an increase in gyration radius parallel to the stretching direction and a decrease in the perpendicular direction. Notably, DB polymers show the most significant rise in the gyration radius of entire molecule parallel to stretching (<Rg,∥>) and at all three welding times, whereas the differences in the gyration radius of entire molecule perpendicular to stretching <Rg,⊥> is negligible. Besides, the variation of relative <Rg,∥> as function of strain, becomes increasingly pronounced with more sidechains, indicating that relaxation becomes progressively more challenging for branched polymers with higher grafting density. In Figures and, we compare the normalized gyration radii of backbone and sidechains separately. The changing trends of backbone are similar to those of entire molecule, with the most significant changes in <Rg,∥> and <Rg,⊥> observed in DB polymers. Moreover, the change in radius of gyration of sidechains in the parallel direction to the stretching is almost identical for all topological polymers. In contrast, the normalized <Rg,⊥> decreases more gradually as grafting density increases.