The invention discloses an event-driving-based fault-tolerant control method under network attack of an unmanned surface vehicle and relates to a fault-tolerant control method under the network attackof an unmanned surface vehicle, thereby solving problems of high network communication bandwidth occupancy rate and high data transmission energy consumption in the existing unmanned surface vehiclesystem. The method comprises the following steps: step one, establishing a state space equation of an unmanned surface vehicle system according to a kinematics equation of the unmanned surface vehicle; step two, introducing a random spoofing attack based on the state-space equation of the unmanned surface vehicle system and establishing a mathematical model of the random spoofing attack; step three, establishing a state space equation of the unmanned surface vehicle system with the spoofing attack introduced according to the mathematical model of the random spoofing attack; step four, designing a fault-tolerant controller gain matrix based on dynamic event driving; and step five5, designing a dynamic event driving mechanism based on the dynamic-event-driving-based fault-tolerant controllergain matrix. The method is used for fault-tolerant control under the network attack of the unmanned surface vehicle.