This paper analyses the keytechnical parameters of the rocket engine, determines the test functions and technical indexes of the test bench. The design increases the dynamic characteristics of the bench to reduce the influence of the bench structure on measurement accuracy, increases the axial stiffness and reduces the lateral stiffnessof the movableframe to raise the natural frequency of the frame, eliminates the vibration effect of engine starting to the frame, realizes the design and development of the rocket engine test bench.