A processing apparatus (10) applies a processing (Pn) to a continuous band-shaped work (1) by intermittently stopping the work (1) which is running along a predetermined running path (PL). In the processing apparatus, a variation in the tension of the work (1) which may be produced by the intermittent stoppage of the work (1) is effectively suppressed. A work conveying part (30) comprises an endless annular body (37a) wrapped around conveying rolls (31, 32), a first mobile body (34a), and a second mobile body (34b). A first drive roll (37e) circulatingly drives the endless annular body (37a) continuously at a predetermined speed so that the endless annular body (37a) performs the same running operation and accumulating operation as the work (1) in the area where the endless annular body (37a) is arranged along the running path (PL). An intermittent feeding part (31b) intermittently stops the endless annular body (37a) when the work (1) is stopped.