Universal serial bus (USB) European extension socket with electrode socket totally-closed structure

The utility model relates to the technical field of extension sockets, and provides a USB European extension socket with a fully-closed electrode socket structure, which comprises an extension socket body and supporting seats, the supporting seats are uniformly arranged on one side of the extension socket body, a limiting groove is arranged in the middle of one side of the extension socket body, a power line is arranged in the limiting groove, and the power line is connected with the extension socket body. And a splicing structure is arranged on one side of the extension socket body. According to the utility model, through the arrangement of the splicing structure, the power line is accommodated in the limiting groove, the fixing plate is moved to drive one end of the connecting rod to abut against one end of the clamping groove, and the fixing plate is pressed to drive the clamping block to move into the clamping groove through the connecting rod, so that the clamping block and the clamping groove are clampe