Shaking table substructure test is an effective real-time structural hybrid testing method,which can enhance the loading capacity of the shaking table by utilizing the shaking table and other actuator devices.A control method based on Smith predictor was proposed for the shaking table substructure testing control system affected by disturbances during the test.The equipment and the operating principle of the shaking table substructure test based on the active mass driver system were introduced,as well as the implementation of the Smith predictor.The effect of delay on the control system was analyzed,when a delay of 4 ms was added to the control system,the simulation results were diverged.Meanwhile,there was a pure lag in the system model,so it easily produced serious oscillations.To solve this problem,the traditional Smith predictor and the improved Smith predictor were introduced,accompanied by relevant numerical simulations.The simulation results demonstrate that the shaking table substructure testing method based on the traditional Smith predictor can ensure that the system simulation results do not diverge,albeit the results are rather general.In contrast,the shaking table substructure testing method based on the improved Smith predictor yields more desirable results,with smaller peak errors,root mean square errors and other related evaluation indicators.This indicates that the method can effectively solve the stability issues in the delay system.