Abstract: In order to achieve adjustable acceleration amplification in the process of random vibration of products, this paper designs an acceleration amplification adjustable device from the knowledge of material mechanics and vibration theory, with a theoretical amplification range of 2.2~5.4, and verifies its amplification effect through numerical simulation and vibration test. The results show that the theoretical acceleration amplification formula proposed in this paper is accurate and reliable, the device has a good acceleration amplification effect and a simple structure and good applicability. The theoretical formula and the device can be extended to all the applications where the acceleration response of the vibration test needs to be varied, which is a good engineering reference.