Based on analysis on penetration failure mechanism and buffering protection principles of storage test module under high-overload and dynamic simulation on impact, the maximum stress which circuit board suffered from and its attenuation were analyzed, accurate data and some conclusions about structure miniaturization were got.According to Newton's second theorem, the wave equation of the module was established and the stress wave propagation in variable sections was acquired.Compared with traditional structures by means of shell-ing, the maximum acceleration of the proposed is about 40 000 g while that of the traditional is about 60 000 g, from those experimental re-sults, it can be concluded that the proposed structure in this paper has higher cushioning properties and impact resistance.