Abstract: According to the characteristic of acceleration test in the processes course of projectile penetration into hard target with high velocity, a kind of novel high g shock experiment equipment have been developed by us. It is composed of one-stage air gun, acceleration storage test and measurement equipment, shell, reflect type Laser velocimeter and Laser Doppler velocimeter, moreover the high g shock experiment on Onboard acceleration storage test and measurement equipment is carried out through with above experiment equipment. The foamed aluminum buffer cushion is employed used to protect the memory circuit modulus, and the grating is utilized as cooperative aim target, so Laser frequency shifting signal from external shell of the test equipment and the circuit modulus in high shock processes course are recorded synchronously by two sets of Laser Doppler velocimeters. Their acceleration –time curve are acquired and the buffer cushion effect are compared.