The deformation and instability caused by residual stress of high intensity aluminum alloy material is a problem, which is always puzzled in engineering .Vibratory stress relief (VSR) technology is a method for reducing residual stress and improving the size stability of member, and the mastery of vibratory stress relief technics is vitally important. This paper introduces the basic principle of vibratory stress relief technics ,then uses high intensity aluminum alloy thick plates to do VSR experiment by suspending simplistic vibration platform, which reveals the specific technics process of VSR and reachs to ideal aging results. The vibratory stress relief technics of aluminum alloy thick plates directly influence the aging results.