A method for manufacturing a high strength hot-dip galvanized steel sheet comprising: heating a steel sheet in a CGL having a DFF type heating zone in which a CO/H 2 O ratio (volume ratio) of an atmospheric gas composition in the heating zone is set in the range of 0.001 to 0.8, a width-direction temperature deviation at a steel sheet temperature of 700 °C or more is set to less than 20 °C at a heating zone outlet side, and an average temperature rising rate from 400 °C to a heating zone outlet side temperature in the heating zone is set to 10 °C/s or more, the steel sheet consisting of, on a mass percent basis, as chemical components, 0.005% to 0.12% of C, 0.7% to 1.8% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, optionally: at least one element selected from the group consisting of 0.05% to 1.2% of Cr, 0.005% to 1.0% of V, and 0.005% to 0.5% of Mo and/or at least one element selected from the group consisting of 0.01% to 0.1 % of Ti, 0.01% to 0.1% of Nb, 0.0003% to 0.0050% of B, 0.05% to 2.0% of Ni, and 0.05% to 2.0% of Cu and/or at least one element selected from the group consisting of 0.001% to 0.005% of Ca and 0.001% to 0.005% of REM and the balance being Fe and incidental impurities; next, performing annealing in a temperature range of 700 to 940 °C for 15 to 600 seconds; subsequently, performing cooling to a temperature range of 440 to 550 °C at a cooling rate of 3 °C/s or more; and then dipping the steel sheet at a temperature of 440 to 550 °C into a hot-dip galvanizing bath at a temperature of 440 to 500 °C within 200 seconds after the cooling to perform hot-dip galvanizing. heating a steel sheet in a CGL having a DFF type heating zone in which a CO/H 2 O ratio (volume ratio) of an atmospheric gas composition in the heating zone is set in the range of 0.001 to 0.8, a width-direction temperature deviation at a steel sheet temperature of 700 °C or more is set to less than 20 °C at a heating zone outlet side, and an average temperature rising rate from 400 °C to a heating zone outlet side temperature in the heating zone is set to 10 °C/s or more, the steel sheet consisting of, on a mass percent basis, as chemical components, 0.005% to 0.12% of C, 0.7% to 1.8% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, 0.005% to 0.12% of C, 0.7% to 1.8% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, optionally: at least one element selected from the group consisting of 0.05% to 1.2% of Cr, 0.005% to 1.0% of V, and 0.005% to 0.5% of Mo and/or at least one element selected from the group consisting of 0.01% to 0.1 % of Ti, 0.01% to 0.1% of Nb, 0.0003% to 0.0050% of B, 0.05% to 2.0% of Ni, and 0.05% to 2.0% of Cu and/or at least one element selected from the group consisting of 0.001% to 0.005% of Ca and 0.001% to 0.005% of REM and the balance being Fe and incidental impurities; next, performing annealing in a temperature range of 700 to 940 °C for 15 to 600 seconds; subsequently, performing cooling to a temperature range of 440 to 550 °C at a cooling rate of 3 °C/s or more; and then dipping the steel sheet at a temperature of 440 to 550 °C into a hot-dip galvanizing bath at a temperature of 440 to 500 °C within 200 seconds after the cooling to perform hot-dip galvanizing. at least one element selected from the group consisting of 0.05% to 1.2% of Cr, 0.005% to 1.0% of V, and 0.005% to 0.5% of Mo and/or at least one element selected from the group consisting of 0.01% to 0.1 % of Ti, 0.01% to 0.1% of Nb, 0.0003% to 0.0050% of B, 0.05% to 2.0% of Ni, and 0.05% to 2.0% of Cu and/or at least one element selected from the group consisting of 0.001% to 0.005% of Ca and 0.001% to 0.005% of REM and the balance being Fe and incidental impurities; next, performing annealing in a temperature range of 700 to 940 °C for 15 to 600 seconds; subsequently, performing cooling to a temperature range of 440 to 550 °C at a cooling rate of 3 °C/s or more; and then dipping the steel sheet at a temperature of 440 to 550 °C into a hot-dip galvanizing bath at a temperature of 440 to 500 °C within 200 seconds after the cooling to perform hot-dip galvanizing.