Abstract: In view of the difficulties to simulate the original shock waveform on the existing equipment for long pulse duration and high acceleration magnitude in classical shock tests, the equivalent damage criterion was applied to convert large pulse-width classical shock to narrow pulse-width shock, and to convert high-order classical waveform shock to shock response spectrum. The technical issues involved in the two conversion processes include the selection of equivalent frequencies and the determination of key parameters of the shock response spectrum, which were thoroughly analyzed. Specific principles and methods for determining each parameter were provided. The solution proposed in this article may provide a reference for the engineering application of classical shock simulation in special situations.