A cold rolling method for performing a series of processes including rolling and cutting of a workpiece in succession, wherein tensile forces are applied to the workpiece during processes from the rolling to straightening.To eliminate the processes of annealing, pickling and chemical conversion coating to accomplish cost reduction and energy saving. To reduce material loss to 5% or lower. To decrease dimensional variation among workpieces (within 0.05 mm or lower) and improve straightness of the rolled workpiece including end parts thereof after cutting (final precision of 0.1 mm). To decrease lead time necessary to process a base material before it is introduced into the rolling line to reduce running and equipment costs.