Grain-oriented electrical steel plate

A grain-oriented electrical steel plate with reduced noise when fabricated as a transformer can be obtained by making the respective lengths (d) of the plastic strain regions of the steel plate in the transverse direction to be 0.05 to 0.4 mm and the ratio ([sum]d/[sum]w) of the total ([sum]d) of the lengths (d) to the total ([sum]w) of the respective introduction intervals (w) for the plastic strain regions to be 0.2 to 0.6 according to the present invention.