The invention provides a self-addressing charging system of a charging pile, and belongs to the field of automatic charging sockets. The self-addressing charging system of the charging pile comprises a self-addressing charging plug and a self-adapting car-mounted charging socket, the self-addressing charging plug is located on the charging pile, and the self-adapting car-mounted charging socket is located on an electric car; a charging socket positioning device and a charging socket seeking and docking device are mounted on the side face of the charging pile; and automatic charging can be conducted after a driver swipes a card, manual intervention is avoided, and meanwhile an original charging wire structure is abandoned.