The repetitive continuous extrusion forming process（R-Conform process）was carried out on the pre-aged 6201 Al alloy produced by continuous casting and rolling.The microstructure characteristic and mechanical property evolution of the R-Conform processed alloy were investigated using electron back-scatter diffraction（EBSD），transmission electron microscopy（TEM），X-ray diffractometer，polarizing metallographic microscopy，and tensile testing. The results show that R-Conform can effectively refine grain size and homogenize alloy microstructure. With the increase of R-Conform pass numbers， the balance of strength-ductility（TS×EL） increased from 2.93 GPa·% to 4.85 GPa·% after fourth passes，and then stabilized.A large number of β″ phases precipitated in the pre-aged 6201 Al alloy after pre-aging. With the increase of R-Conform pass numbers， the grain was effectively refined and the homogenized alloy microstructure was formed， where the average size of the grain was refined from 259 μm to 60 μm.Meanwhile，high density of dislocations formed，gradually tangled with each other，and finally transformed to subgrain boundaries.A part of needle β″ phases dissolved into the Al alloy matrix. The evolution of the mechanical property was mainly attributed to the combined effect of grain refinement and homogenization，the synthetic effect of dislocation increase and the dissolution of β″ phases.