The utility model discloses a knife-switch operation hole shield device comprising the following structures: a mount assembly provided with an insertion hole matched in shape and size with the knife-switch operation hole; an ID identification code module arranged on the mount assembly and used for storing an ID identification code; a solenoid arranged in the mount assembly, and an iron core of the solenoid inserts the insertion hole; an electrode shaft arranged on the mount assembly and electrically connected with the solenoid. An unlocking key recognizes an ID identification code of the ID identification code module is correct, the unlocking key uses the electrode shaft to power up the solenoid, so the iron core contracts to expose the insertion hole. The knife-switch operation hole shield device can effectively solve the problems that an outdoor ring network cabinet knife-switch operation hole in a distribution network system is poor in management, and maloperations can easily happen in the operation process, thus improving intelligentize management of the distribution network system, and ensuring operation personnel and equipment safety.