Provided is an innovative feed roll cutting method which eliminates the labor involved in component replacement and enables continuous operation for a long period of time, and with which a feed roll can be cut in a state of transport and cutting dust is prevented from being scattered given that burr is not generated on a cutting end surface. In this method for dividing a feed roll, a feed roll (1), in which at least one surface of a long metal foil (4) is coated with an active material layer, is cut by a laser beam (L) in a longitudinal direction. The feed roll (1) is moved continuously. During movement of the feed roll (1), the feed roll (1) is irradiated with the laser beam (L) to melt an irradiation point (P). Downstream of the laser beam (L) irradiation point (P), one of the divided feed rolls (1s) is drawn upward relative to a feed roll (1) feeding surface, the other adjacent feed roll 1t is drawn downward, and the feed rolls (1s/1t) which are adjacent to each other at the irradiation point (P) and in which a slit is formed are separated.