The invention discloses a sealed wire, automatic wire feeding system for electrical energy meter. The system includes a wire feeding device, an aligning device, a first wire puller device, a length control device detection component, a second automatic wire puller device and a sealed stamp system processor (hereafter referred to as processor) that are passed through successively by the sealed wire; the sealed wire goes through the first wire puller device; the length signal of the sealed wire is captured through the length control device detection component; and the feeding wire length of the sealed wire is calculated; next the output length of the sealed wire is controlled according to the length requirements of the sealed wire. The provided sealed wire automatic wire feeding system for electrical energy meter adopts an encoder to capture the length signal of the sealed feeding wire, which can reflect accurately the length variables of the sealed wire. Adopting the driving method of a stepping motor and a synchronous belt can guarantee the length precision of sealed feeding wire and the speedy reaction of length control; this can also alter the outgoing state of the sealed wire, automatically completing the wire feeding process of the sealed wire. The present invention increases work load efficiency and work quality. The system structure is compact, small, and the occupied space is small. In the meantime, it lowers the labor costs, and increases the product quality.