The structure of component of torpedo thermal power plant is complex with abundant vibration sources and high coupling degree.In order to simulate the real working state of power plant,and isolate the vibration transmission effectively in the experiment environment such as the motor,an vibration isolation support system based on cord type elastic airbag was designed,and the technical characteristics were analyzed.The results show that by using the system,the vibration transmission path of environment vibration can be blocked effectively on the premise of fully ensuring the reliability and safety of the test bed operation,and it can provide reference for the vibration source separation,evaluation and control of power plant.