The invention discloses an automatic separating bar shear for IC strips and a separating bar shear method thereof, wherein the bar shear comprises a strip charging detection combination A, which lifts the strips in a stack-type strip box in a stepping manner, picks and places the strips on an opening / closing guide rail device, performs directional detection and two-dimensional code data reading, and then delivers the strips downstream; a strip conveying detection combination B, which removes, among the strips delivered from the strip charging detection combination part, the strips which are unqualified in the directional detection into a scrap box; a strip separating bar shear combination C, in which the strips delivered from the previous position, on which the locations of the unqualified blocks are found, are subjected to stepping movement through a bar shear strip movement device, and in the process of stepping movement, the unqualified blocks are shorn off through a separating bar shear mold device and then fall into an unqualified block collecting device; and a strip discharging combination D, in which the separated and bar-shorn strips delivered from the strip separating bar shear combination are subjected to delivery, discharging and other operations to be automatically stacked in a device of a discharging box.