Anti-reverse diode fault early warning processing device and method and DC power distribution cabinet

The invention provides an anti-reverse diode fault early warning processing device and method and a DC power distribution cabinet, and the device comprises a temperature sensor which is disposed on an anti-reverse diode in the DC power distribution cabinet and is used for collecting the current first temperature of the anti-reverse diode; the temperature controller is connected with the temperature sensor and is used for determining that the anti-reverse diode is a potential fault anti-reverse diode when determining that the first temperature is greater than or equal to a preset temperature threshold value; the temperature controller is connected to the circuit breaker through a trip coil node of the circuit breaker in the DC power distribution cabinet, and is also used for controlling the circuit breaker to carry out trip processing. Compared with the prior art, the method provided by the invention can be used for carrying out timely detection and early warning processing on the potential fault of the anti-r