<p>Aiming at the problem of model damage caused by aerodynamic structure coupling vibration of model tail support system in tri-sonic wind tunnel, Due to the advantages of high energy density and rapid response of piezoelectric ceramic materials, piezoelectric ceramic actuators as active vibration suppression technology for wind tunnels have become a research hotspot. Based on the variable stiffness active vibration suppression principle, an active and passive vibration suppression system was designed in the ground and wind tunnel test. Passive vibration suppression uses non-Newtonian materials and tungsten steel support rods, while active vibration suppression uses piezoelectric ceramics, and vibration suppression tests are conducted separately. The main purpose of the system is to solve the serious vibration problems caused by the large aspect ratio model and large lift surface model in Transonic and supersonic tests. Based on the analysis of key techniques in model vibration, the design optimization of the layout of the vibration suppressor was achieved. The feasibility of this design method and the performance of the entire vibration suppression system were verified through ground and wind tunnel tests. The test results showed that the vibration suppression system can suppress the impact vibration of the model’s supersonic switching vehicle and the vibration caused by aerodynamic structure coupling, and effectively improve the available attack angle of the test, providing a reliable testing technology for the model’s supersonic test. </p>