Disclosed is a computer network information security control device, comprising a cabinet, a control host and a fixed box. The present invention is reasonably designed in structure. When working, the control host is driven by means of a handle to move back and forth or detach along a support rod, which is convenient for assembly and maintenance. When encountering vibration interference, a support column presses a spring to move up and down. The shock absorption effect is good, and the failure rate is lower. A first motor provides power to drive a first rotating shaft, a second rotating shaft and fan blades to rotate for air cooling and heat dissipation. Bristles clean an air filter screen to prevent clogging, and the heat dissipation performance is good. A thermometer and a smoke sensor may be monitored in real time. When a fire occurs, an electric control valve is turned on, and a fire-fighting gas in a fire extinguisher cylinder is sprayed out through a spray plate to extinguish the fire, which improves the security of device operation. When attacked by a hacker or virus, a telescopic rod drives a slide plate to move to the left, and drives a power supply connector and a network interface to move to the left so as to disconnect the power supply and the network for physical isolation, effectively ensuring the security of network information.
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