Abstract: The modification of 6061 aluminum alloy plate for automobile were carried out by friction stir processing, and the tensile properties and corrosion resistance at different rotation speeds (300-1 100 r·min^-1) and travel speeds (120-300 mm·min^-1) were studied. The results show that when the travel speed was 300 mm·min^-1, with increasing the rotation speed, the tensile strength and yield strength of 6061 aluminum alloy first increased and then decreased, and the elongation changed with inflection; the self-corrosion potential first moved positively and then negatively; when the rotation speed was 600 r·min^-1, the tensile strength and yield strength were the highest, and the self-corrosion potential was the most positive. When the rotation speed was 600 r·min^-1, with increasing the travel speed, the tensile strength and yield strength of 6061 aluminum alloy increased, the elongation first decreased and then increased; the self-corrosion potential first moved positively and then negatively; when the travel speed was 300 mm·min^-1, the tensile strength and yield strength were the highest, and the self-corrosion potential was the most positive. When the rotation speed and travel speed were 600 r·min^-1 and 300 mm·min^-1, respectively, the tensile properties and corrosion resistance of 6061 aluminum alloy were the best.