In order to evaluate the cushioning effect of host computer cushion structure, impact test was carried out on personal computer package by using high speed camera photography, and the protective performances of EPE cushion were investigated. Experiments were carried out with three drop heights of 5, 10, 15 cm. A high-speed camera was employed to capture high-speed digital images of the cushion, host, and sliding table during impact tests. The shock displacements and response accelerations of host and sliding table were analyzed using digital image processing technique. The displacement-time and acceleration-time curves of host computer, peak acceleration of sliding table, and shock transmissibility of cushion was obtained. The research results showed that the response accelerations of the host computer increase with the increase of drop height; the shock transmissibility of cushion is at about 50%, which indicates that the EPE cushioning structure has outstanding cushioning performance.