Device and method for monitoring state of cable intermediate joint

The invention relates to a state monitoring device and method for a cable intermediate joint. The device comprises an acquisition module, a processing module, a communication module and a regulation and control module, the acquisition module comprises a temperature sensor, a humidity sensor and a partial discharge detection sensor, the acquisition module acquires first parameters of the cable intermediate joint, and the first parameters comprise at least two of current temperature, current humidity and partial discharge signals; the processing module determines the state of the cable intermediate joint according to the current temperature, the current humidity and the partial discharge signal of the cable intermediate joint, the communication module transmits the state of the cable intermediate joint to the regulation and control module, and the regulation and control module displays the state of the cable intermediate joint. The state of the cable intermediate joint can be effectively monitored, accurate ear