The invention relates to an intelligent expressway guardrail collision device. The intelligent expressway guardrail collision device is installed on the side, close to vehicles, of a guardrail of an expressway and comprises a device body, a vibration sensor, a controller, an elastic connecting part, a collision plate and a power supply device; the device body is provided with a hollow cavity, anda sensor mounting surface is located on the side, close to the vehicles, of the device body; the guardrail is detachably connected with the side, away from the sensor mounting surface, of the device body; the controller is installed in the hollow cavity; the vibration sensor is installed on the sensor mounting surface and connected with the controller; the controller is connected with a warning light installed on the top of the device body; the elastic connecting part is arranged in the collision direction of the vehicles, and one end of the elastic connecting part is connected with the devicebody; the power supply device supplies power to the vibration sensor, the controller and the warning lamp; and the controller is in wireless communication with a monitoring center. When vehicles collide the guardrail collision device, the guardrail collision device can conduct warning or remote alarm, the risk of serial traffic accidents is reduced, and more rescue time is acquired.