Device and method for preventing reverse power transmission

The invention discloses a reverse power transmission prevention device and method, and relates to the technical field of reverse power transmission prevention. The anti-reverse power transmission device comprises a test pen main body and an anti-reverse power transmission wire, wherein the anti-reverse power transmission wire is arranged at the tail part of the test pen main body; the end, away from the test pen body, of the anti-reverse-power-transmission wire is connected with a second power clamp. The front end of the test pen main body is connected with an electricity testing assembly, the outer wall of the test pen main body is provided with a fixing assembly, and the fixing assembly is used for installing the reverse power transmission prevention device to a switch connection part; the electricity testing assembly comprises a wire main body, a butt joint end and a first power supply clamp, one end of the wire main body is connected with the metal body in the electricity testing pen main body, the other