The　stress　relaxation　behavior　and　springback　equation　of　7050　aluminum　alloys　during　the　age-forming　process　were　studied　through　self-designed　uniaxial　tension　device.　The　results　show　that　in　traditional　aging　temperature,　the　stress　relaxation　curve　of　7050　aluminum　alloys　exhibits　a　classical　logarithmic　decrement　curve.　The　stress　relaxation　process　can　be　divided　into　three　stages,　which　are　the　initial　stress　decayed　fast　stage,　the　subsequent　stress　slowly　decayed　stage　and　the　stress　constantly　maintained　stage,　respectively.　Stress　relaxation　limit　of　7050　aluminum　alloys　decreases　with　increasing　aging　temperature.　The　threshold　stress　presents　during　the　stress　relaxation　process　due　to　the　interaction　between　precipitation　behavior　and　dislocation　creep　of　7050　aluminum　alloys.　The　stress　relaxation　equation　of　7050　aluminum　alloys　is　obtained　through　resolving　the　feature　and　Taylor　equation　of　relaxation　process,　and　using　the　stress　relaxation　equation　can　precisely　predict　the　springback　of　workpiece　after　age-forming.　©　2016,　Journal　of　Materials　Engineering.　All　right　reserved.