A monitoring system according to an embodiment of the present disclosure includes a programmable logic controller (PLC) configured to receive specification information of at least one electrode from a first sensor, receive coordinates of a position of the at least one electrode from a second sensor, and generate identification information of each of the at least one electrode on the basis of the specification information and the coordinates of the position, an inspection device configured to inspect the at least one electrode to generate inspection information, and a controller configured to manage the identification information and the inspection information of the at least one electrode by matching the identification information and the inspection information.