This invention relates to an event-triggered system regulation and control method in a network controlsystem. This method ensures the safe operation of the network controlsystem even when it is subjected to a DoS attack, achieving actual trajectory tracking and disturbance suppression. Specifically, this invention ensures that the network control system can achieve actual trajectory tracking and disturbance suppression even under DoS attacks; that is, the system's tracking error can be arbitrarily reduced by adjusting the event triggering mechanism parameters. This invention has excellent practicality and accuracy and can be applied to various practical network control systems, such as vehicle networking control systems and networked motor control systems.