Electricity larceny prevention metering secondary junction box

The embodiment of the utility model provides an electricity larceny prevention metering secondary junction box, and belongs to the field of junction boxes. The junction box is provided with an opening box for placing a wiring group, two sides of the opening box are provided with a plurality of wiring holes for allowing wires to pass through, two ends of an opening of the opening box are respectively provided with two lug plates, one end of each lug plate connected with the opening box can be provided with a one-way tooth groove, the opening box can be sealed by a box cover, and two ends of the box cover are provided with teeth. The teeth can be matched with the one-way tooth grooves so that the box cover can only be clamped into the open box in the advancing direction of the one-way tooth grooves, baffles are arranged at the advancing ends of the one-way tooth grooves and can be clamped into the inner side walls of the lug plates, mechanical locks are arranged on the lug plates close to the baffles, and after