The utility model provides an electric energy meter box that can thread off safely, the power distribution box comprises a box body, box internal partitioning becomes the inlet wire room, be qualified for the next round of competitions room and instrument room, the box openly is provided with the room door that is used for opening each room, be provided with the circuit breaker that is used for controlling the inlet wire break -make in the inlet wire room, the operation window who is used for the operating breaker is offered to the room door of inlet wire room, operation window is provided with the guard gate that can open, the room door inboard of inlet wire room is provided with the trip switch with circuit breaker communication connection, the jack that is used for operating trip switch with trip switch is relatively seted up to the guard gate.