Cyber-physical systems often suffer from false data injection attacks and limited communication bandwidth.To solve the problem,a robust security-event-triggered sliding mode controller is proposed.First,according to the threshold information of anomaly detection mechanism,the upper bound information of false data injection attacks is obtained.Second,based on the estimated upper bound information of the attacks,the event-triggering mechanism is introduced to design a robust security-event-triggered sliding mode controller.The effectiveness of the proposed controller is proved by Lyapunov stability theory,and it is also proved that there is no Zeno phenomenon in the designed controller.Finally,the simulation results show that the proposed controller can ensure the systems safe and stable operation with the minimum event-triggering times,thus saving the communication resources.