A method for manufacturing grain-oriented electrical steel sheet, the method comprising: manufacturing a steel slab consisting of 2 wt% to 7 wt% of Si, 0.01 wt% to 0.085 wt% of C, 0.01 wt% to 0.045 wt% of Al, 0.01 wt% or less of N, 0.01 wt% to 0.05 wt% of P, 0.02 wt% to 0.5 wt% of Mn, more than 0 wt% and 0.0055 wt% or less of S and one or more kinds of 0.03 wt% to 0.10 wt% of Sn and 0.01 wt% to 0.05 wt% of Sb, with the remainder being Fe and other unavoidable impurities; hot-rolling the steel slab to produce a hot-rolled sheet; cold-rolling the hot-rolled sheet to produce a cold-rolled sheet; primary recrystallization-annealing the cold-rolled sheet; applying an annealing separator to the primary recrystallization-annealed cold-rolled sheet and drying the same; and secondary recrystallization-annealing the cold-rolled sheet on which the annealing separator is applied, wherein the primary recrystallization-annealing is performed so that the thickness of an oxide layer formed on the surface of the cold-rolled sheet is 0.5 μm to 2.5 μm, and the oxygen amount of the oxide layer is 600 ppm or more after the primary recrystallization-annealing, and wherein a forsterite (Mg 2 SiO 4 ) film is removed in the secondary recrystallization-annealing wherein the primary recrystallization-annealing is performed through a heating zone, a first soaking zone, a second soaking zone and a third soaking zone , and wherein the temperatures of the heating zone, the first soaking zone, the second soaking zone , and the third soaking zone are 800°C to 900°C wherein a dew-point of the heating zone is 44°C to 49°C, wherein a dew-point of the first soaking zone is 50°C to 55°C, a dew-point of the second soaking zone is 56°C to 68°C, and wherein a dew-point of the third soaking zone is 35°C to 65°C. manufacturing a steel slab consisting of 2 wt% to 7 wt% of Si, 0.01 wt% to 0.085 wt% of C, 0.01 wt% to 0.045 wt% of Al, 0.01 wt% or less of N, 0.01 wt% to 0.05 wt% of P, 0.02 wt% to 0.5 wt% of Mn, more than 0 wt% and 0.0055 wt% or less of S and one or more kinds of 0.03 wt% to 0.10 wt% of Sn and 0.01 wt% to 0.05 wt% of Sb, with the remainder being Fe and other unavoidable impurities; hot-rolling the steel slab to produce a hot-rolled sheet; cold-rolling the hot-rolled sheet to produce a cold-rolled sheet; primary recrystallization-annealing the cold-rolled sheet; applying an annealing separator to the primary recrystallization-annealed cold-rolled sheet and drying the same; and secondary recrystallization-annealing the cold-rolled sheet on which the annealing separator is applied, wherein the primary recrystallization-annealing is performed so that the thickness of an oxide layer formed on the surface of the cold-rolled sheet is 0.5 μm to 2.5 μm, and the oxygen amount of the oxide layer is 600 ppm or more after the primary recrystallization-annealing, and wherein a forsterite (Mg 2 SiO 4 ) film is removed in the secondary recrystallization-annealing wherein the primary recrystallization-annealing is performed through a heating zone, a first soaking zone, a second soaking zone and a third soaking zone , and wherein the temperatures of the heating zone, the first soaking zone, the second soaking zone , and the third soaking zone are 800°C to 900°C wherein a dew-point of the heating zone is 44°C to 49°C, wherein a dew-point of the first soaking zone is 50°C to 55°C, a dew-point of the second soaking zone is 56°C to 68°C, and wherein a dew-point of the third soaking zone is 35°C to 65°C. <EOS>