Aiming at the problem that the simulation results of high speed automatic gun are often different from the actual situation, an embedded measurement and storage system based on inertial sensor is proposed. The analog signal collected by the inertial device is stored in the NAND FLASH by the AD conversion chip and the Field Programmable Gate Array (FPGA) chip with parallel processing capability. After the test, through the host computer to read and analysis. The experimental results show that the system can restore the motion characteristics of the projectile and has high stability and measurement precision, which can provide data to shorten the development cycle of high speed automatic gun.